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### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 8:56 am
Dear Jason,

I have obtained the Cp surface for different TSR and pitch angle values. I already know that the optimal TSR is 5.6 and optimal pitch angle is 7.5 degrees and Cpmax is 0.422.
In my previous post I obtained the optimal rotor speed for 10m/s wind speed and set it to my FAST input file as the rotor speed and because all of the DOFs are disabled, the rotor speed will remain at its optimal value during the simulation.
Naturally the TSR and Cp values from the simulations should match the values mentioned above but they are not!!
It is the same case for 1.5 MW turbine as well, not only SWRT case considered above.
The mentioned matter can cause that my linearization from FAST at MPP not to be correct. because I set the rotor speed to its calculated optimal value (from optimal TSR value). But what is the reason for that?
Again this is the same problem with 1.5 MW turbine

I would appreciated to help me with this? Because I am not expert with FAST.

All the bests,

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 9:16 am
Dear Babak,

I'm not understanding. Are you saying that for the same TSR and pitch, FAST is giving you different results for different wind speeds (equating to different rotor speeds because TSR is the same), even with all structural DOFs disabled?

Best regards

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 9:54 am
Dear Jason,

Sorry if my explanations were not clear enough. let me explain it as below:

--At first, when we want to know the optimal value of TSR and Cpmax for every wind turbine, we disable all DOFs and obtain Cp value for different wind speeds and different pitch angle values. According to the Cp curves, we find the optimal TSR and pitch angle values in which Cp is maximum.
For 1.5MW turbine optimal TSR is 7 and optimal pitch is 2.6°. and for 10 kW turbine, optimal TSR is 5.6 and optimal pitch angle is 7.5°. They are surely correct.

-- Next, I calculate the rotor speed at MPP as below:
rotor speed at MPP = (Optimal TSR * Wind speed) / Rotor radius
and then I linearize the turbine at this rotational speed.
Before doing linearization, when I set rotor speed to its optimal value (at MPP) and disable all DOFs, the obtained TSR and Cp values through simulation do not match to their optimal values, specially Cp!! but why?! what could be the problem?

Best regards,

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 11:11 am
Dear Babak,

So, can you share two sets of FAST input files that you expect to produce the same result, but don't?

Best regards,

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 11:49 am
Dear Jason,

The files of the 10kW turbine is as below (Wind speed is 10m/s), I will post 1.5MW turbine separately.

--10kW

Primary input file:

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`------- FAST v8.16.* INPUT FILE ------------------------------------------------FAST Certification Test #17: SWRT 3-bladed upwind turbine with many DOFs, variable speed control, free yaw, tail-furl, FF turbulence---------------------- SIMULATION CONTROL --------------------------------------False         Echo            - Echo input data to <RootName>.ech (flag)"FATAL"       AbortLevel      - Error level when simulation should abort (string) {"WARNING", "SEVERE", "FATAL"}         60   TMax            - Total run time (s)      0.001   DT              - Recommended module time step (s)          2   InterpOrder     - Interpolation order for input/output time history (-) {1=linear, 2=quadratic}          0   NumCrctn        - Number of correction iterations (-) {0=explicit calculation, i.e., no corrections}      99999   DT_UJac         - Time between calls to get Jacobians (s)      1E+06   UJacSclFact     - Scaling factor used in Jacobians (-)---------------------- FEATURE SWITCHES AND FLAGS ------------------------------          1   CompElast       - Compute structural dynamics (switch) {1=ElastoDyn; 2=ElastoDyn + BeamDyn for blades}          1   CompInflow      - Compute inflow wind velocities (switch) {0=still air; 1=InflowWind; 2=external from OpenFOAM}          2   CompAero        - Compute aerodynamic loads (switch) {0=None; 1=AeroDyn v14; 2=AeroDyn v15}          1   CompServo       - Compute control and electrical-drive dynamics (switch) {0=None; 1=ServoDyn}          0   CompHydro       - Compute hydrodynamic loads (switch) {0=None; 1=HydroDyn}          0   CompSub         - Compute sub-structural dynamics (switch) {0=None; 1=SubDyn}          0   CompMooring     - Compute mooring system (switch) {0=None; 1=MAP++; 2=FEAMooring; 3=MoorDyn; 4=OrcaFlex}          0   CompIce         - Compute ice loads (switch) {0=None; 1=IceFloe; 2=IceDyn}---------------------- INPUT FILES ---------------------------------------------"SWRT/Test17_ElastoDyn.dat"    EDFile          - Name of file containing ElastoDyn input parameters (quoted string)"unused"      BDBldFile(1)    - Name of file containing BeamDyn input parameters for blade 1 (quoted string)"unused"      BDBldFile(2)    - Name of file containing BeamDyn input parameters for blade 2 (quoted string)"unused"      BDBldFile(3)    - Name of file containing BeamDyn input parameters for blade 3 (quoted string)"SWRT/Test17_InflowWind.dat"    InflowFile      - Name of file containing inflow wind input parameters (quoted string)"SWRT/SWRT_AeroDyn15.dat"    AeroFile        - Name of file containing aerodynamic input parameters (quoted string)"SWRT/Test17_ServoDyn.dat"    ServoFile       - Name of file containing control and electrical-drive input parameters (quoted string)"unused"      HydroFile       - Name of file containing hydrodynamic input parameters (quoted string)"unused"      SubFile         - Name of file containing sub-structural input parameters (quoted string)"unused"      MooringFile     - Name of file containing mooring system input parameters (quoted string)"unused"      IceFile         - Name of file containing ice input parameters (quoted string)---------------------- OUTPUT --------------------------------------------------True          SumPrint        - Print summary data to "<RootName>.sum" (flag)          1   SttsTime        - Amount of time between screen status messages (s)      99999   ChkptTime       - Amount of time between creating checkpoint files for potential restart (s)      0.008   DT_Out          - Time step for tabular output (s) (or "default")         10   TStart          - Time to begin tabular output (s)          1   OutFileFmt      - Format for tabular (time-marching) output file (switch) {1: text file [<RootName>.out], 2: binary file [<RootName>.outb], 3: both}True          TabDelim        - Use tab delimiters in text tabular output file? (flag) {uses spaces if false}"ES10.3E2"    OutFmt          - Format used for text tabular output, excluding the time channel.  Resulting field should be 10 characters. (quoted string)---------------------- LINEARIZATION -------------------------------------------False         Linearize       - Linearization analysis (flag)         36   NLinTimes       - Number of times to linearize (-) [>=1] [unused if Linearize=False]  60.23, 60.46, 60.69, 60.92, 61.15, 61.38, 61.61, 61.84, 62.07, 62.3, 62.53, 62.76, 62.99, 63.22, 63.45, 63.68, 63.91, 64.14, 64.37, 64.6, 64.83, 65.06, 65.29, 65.52,   65.75, 65.9, 66.21, 66.44, 66.67, 66.9, 67.13, 67.36, 67.59, 67.82, 68.05, 68.28  LinTimes        - List of times at which to linearize (s) [1 to NLinTimes] [unused if Linearize=False]          1   LinInputs       - Inputs included in linearization (switch) {0=none; 1=standard; 2=all module inputs (debug)} [unused if Linearize=False]          1   LinOutputs      - Outputs included in linearization (switch) {0=none; 1=from OutList(s); 2=all module outputs (debug)} [unused if Linearize=False]False         LinOutJac       - Include full Jacobians in linearization output (for debug) (flag) [unused if Linearize=False; used only if LinInputs=LinOutputs=2]False         LinOutMod       - Write module-level linearization output files in addition to output for full system? (flag) [unused if Linearize=False]---------------------- VISUALIZATION ------------------------------------------          0   WrVTK           - VTK visualization data output: (switch) {0=none; 1=initialization data only; 2=animation}          2   VTK_type        - Type of VTK visualization data: (switch) {1=surfaces; 2=basic meshes (lines/points); 3=all meshes (debug)} [unused if WrVTK=0]false         VTK_fields      - Write mesh fields to VTK data files? (flag) {true/false} [unused if WrVTK=0]         15   VTK_fps         - Frame rate for VTK output (frames per second){will use closest integer multiple of DT} [used only if WrVTK=2]`

ElastoDyn:

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`------- ELASTODYN v1.03.* INPUT FILE -------------------------------------------FAST certification Test #17: FAST model of a SWRT 3-bladed upwind turbine.  Note- SWRT rotates in CCW direction- some inputs will be mirror image of the actual turbine. Model properties from "SWRTv1p2.adm" and SWRT "AdamsWT_MakeBladeDat_v12.xls".  JEM Jan., 2004.  Updated by J. Jonkman, NREL, Feb, 2004.---------------------- SIMULATION CONTROL --------------------------------------False         Echo        - Echo input data to "<RootName>.ech" (flag)          3   Method      - Integration method: {1: RK4, 2: AB4, or 3: ABM4} (-)      0.001   DT          - Integration time step (s)---------------------- ENVIRONMENTAL CONDITION ---------------------------------       9.81   Gravity     - Gravitational acceleration (m/s^2)---------------------- DEGREES OF FREEDOM --------------------------------------False          FlapDOF1    - First flapwise blade mode DOF (flag)False          FlapDOF2    - Second flapwise blade mode DOF (flag)False         EdgeDOF     - First edgewise blade mode DOF (flag)False         TeetDOF     - Rotor-teeter DOF (flag) [unused for 3 blades]False         DrTrDOF     - Drivetrain rotational-flexibility DOF (flag)False        GenDOF      - Generator DOF (flag)False          YawDOF      - Yaw DOF (flag)False         TwFADOF1    - First fore-aft tower bending-mode DOF (flag)False         TwFADOF2    - Second fore-aft tower bending-mode DOF (flag)False         TwSSDOF1    - First side-to-side tower bending-mode DOF (flag)False         TwSSDOF2    - Second side-to-side tower bending-mode DOF (flag)False         PtfmSgDOF   - Platform horizontal surge translation DOF (flag)False         PtfmSwDOF   - Platform horizontal sway translation DOF (flag)False         PtfmHvDOF   - Platform vertical heave translation DOF (flag)False         PtfmRDOF    - Platform roll tilt rotation DOF (flag)False         PtfmPDOF    - Platform pitch tilt rotation DOF (flag)False         PtfmYDOF    - Platform yaw rotation DOF (flag)---------------------- INITIAL CONDITIONS --------------------------------------          0   OoPDefl     - Initial out-of-plane blade-tip displacement (meters)          0   IPDefl      - Initial in-plane blade-tip deflection (meters)      7.5     BlPitch(1)  - Blade 1 initial pitch (degrees)       7.5   BlPitch(2)  - Blade 2 initial pitch (degrees)      7.5   BlPitch(3)  - Blade 3 initial pitch (degrees) [unused for 2 blades]          0   TeetDefl    - Initial or fixed teeter angle (degrees) [unused for 3 blades]          0   Azimuth     - Initial azimuth angle for blade 1 (degrees)  184.3998   RotSpeed    - Initial or fixed rotor speed (rpm)          0   NacYaw      - Initial or fixed nacelle-yaw angle (degrees)          0   TTDspFA     - Initial fore-aft tower-top displacement (meters)          0   TTDspSS     - Initial side-to-side tower-top displacement (meters)          0   PtfmSurge   - Initial or fixed horizontal surge translational displacement of platform (meters)          0   PtfmSway    - Initial or fixed horizontal sway translational displacement of platform (meters)          0   PtfmHeave   - Initial or fixed vertical heave translational displacement of platform (meters)          0   PtfmRoll    - Initial or fixed roll tilt rotational displacement of platform (degrees)          0   PtfmPitch   - Initial or fixed pitch tilt rotational displacement of platform (degrees)          0   PtfmYaw     - Initial or fixed yaw rotational displacement of platform (degrees)---------------------- TURBINE CONFIGURATION -----------------------------------          3   NumBl       - Number of blades (-)        2.9   TipRad      - The distance from the rotor apex to the blade tip (meters)      0.303   HubRad      - The distance from the rotor apex to the blade root (meters)          0   PreCone(1)  - Blade 1 cone angle (degrees)          0   PreCone(2)  - Blade 2 cone angle (degrees)          0   PreCone(3)  - Blade 3 cone angle (degrees) [unused for 2 blades]     0.1536   HubCM       - Distance from rotor apex to hub mass [positive downwind] (meters)          0   UndSling    - Undersling length [distance from teeter pin to the rotor apex] (meters) [unused for 3 blades]          0   Delta3      - Delta-3 angle for teetering rotors (degrees) [unused for 3 blades]          0   AzimB1Up    - Azimuth value to use for I/O when blade 1 points up (degrees)    -0.7456   OverHang    - Distance from yaw axis to rotor apex [3 blades] or teeter pin [2 blades] (meters)        0.1   ShftGagL    - Distance from rotor apex [3 blades] or teeter pin [2 blades] to shaft strain gages [positive for upwind rotors] (meters)         -8   ShftTilt    - Rotor shaft tilt angle (degrees)    -0.2307   NacCMxn     - Downwind distance from the tower-top to the nacelle CM (meters)      0.091   NacCMyn     - Lateral  distance from the tower-top to the nacelle CM (meters)     0.5475   NacCMzn     - Vertical distance from the tower-top to the nacelle CM (meters)          0   NcIMUxn     - Downwind distance from the tower-top to the nacelle IMU (meters)          0   NcIMUyn     - Lateral  distance from the tower-top to the nacelle IMU (meters)          0   NcIMUzn     - Vertical distance from the tower-top to the nacelle IMU (meters)   0.515112   Twr2Shft    - Vertical distance from the tower-top to the rotor shaft (meters)         34   TowerHt     - Height of tower above ground level [onshore] or MSL [offshore] (meters)          0   TowerBsHt   - Height of tower base above ground level [onshore] or MSL [offshore] (meters)          0   PtfmCMxt    - Downwind distance from the ground level [onshore] or MSL [offshore] to the platform CM (meters)          0   PtfmCMyt    - Lateral distance from the ground level [onshore] or MSL [offshore] to the platform CM (meters)         -0   PtfmCMzt    - Vertical distance from the ground level [onshore] or MSL [offshore] to the platform CM (meters)         -0   PtfmRefzt   - Vertical distance from the ground level [onshore] or MSL [offshore] to the platform reference point (meters)---------------------- MASS AND INERTIA ----------------------------------------          0   TipMass(1)  - Tip-brake mass, blade 1 (kg)          0   TipMass(2)  - Tip-brake mass, blade 2 (kg)          0   TipMass(3)  - Tip-brake mass, blade 3 (kg) [unused for 2 blades]        113   HubMass     - Hub mass (kg)       7.71   HubIner     - Hub inertia about rotor axis [3 blades] or teeter axis [2 blades] (kg m^2)        0.5   GenIner     - Generator inertia about HSS (kg m^2)      260.5   NacMass     - Nacelle mass (kg)      39.81   NacYIner    - Nacelle inertia about yaw axis (kg m^2)          0   YawBrMass   - Yaw bearing mass (kg)          0   PtfmMass    - Platform mass (kg)          0   PtfmRIner   - Platform inertia for roll tilt rotation about the platform CM (kg m^2)          0   PtfmPIner   - Platform inertia for pitch tilt rotation about the platform CM (kg m^2)          0   PtfmYIner   - Platform inertia for yaw rotation about the platform CM (kg m^2)---------------------- BLADE ---------------------------------------------------         15   BldNodes    - Number of blade nodes (per blade) used for analysis (-)"SWRT_Blade.dat"    BldFile(1)  - Name of file containing properties for blade 1 (quoted string)"SWRT_Blade.dat"    BldFile(2)  - Name of file containing properties for blade 2 (quoted string)"SWRT_Blade.dat"    BldFile(3)  - Name of file containing properties for blade 3 (quoted string) [unused for 2 blades]---------------------- ROTOR-TEETER --------------------------------------------          0   TeetMod     - Rotor-teeter spring/damper model {0: none, 1: standard, 2: user-defined from routine UserTeet} (switch) [unused for 3 blades]          0   TeetDmpP    - Rotor-teeter damper position (degrees) [used only for 2 blades and when TeetMod=1]          0   TeetDmp     - Rotor-teeter damping constant (N-m/(rad/s)) [used only for 2 blades and when TeetMod=1]          0   TeetCDmp    - Rotor-teeter rate-independent Coulomb-damping moment (N-m) [used only for 2 blades and when TeetMod=1]          0   TeetSStP    - Rotor-teeter soft-stop position (degrees) [used only for 2 blades and when TeetMod=1]          0   TeetHStP    - Rotor-teeter hard-stop position (degrees) [used only for 2 blades and when TeetMod=1]          0   TeetSSSp    - Rotor-teeter soft-stop linear-spring constant (N-m/rad) [used only for 2 blades and when TeetMod=1]          0   TeetHSSp    - Rotor-teeter hard-stop linear-spring constant (N-m/rad) [used only for 2 blades and when TeetMod=1]---------------------- DRIVETRAIN ----------------------------------------------        100   GBoxEff     - Gearbox efficiency (%)          1   GBRatio     - Gearbox ratio (-)     9999.9   DTTorSpr    - Drivetrain torsional spring (N-m/rad)     9999.9   DTTorDmp    - Drivetrain torsional damper (N-m/(rad/s))---------------------- FURLING -------------------------------------------------False         Furling     - Read in additional model properties for furling turbine (flag) [must currently be FALSE)"SWRT_Furl.dat"    FurlFile    - Name of file containing furling properties (quoted string) [unused when Furling=False]---------------------- TOWER ---------------------------------------------------         10   TwrNodes    - Number of tower nodes used for analysis (-)"SWRT_Tower.dat"    TwrFile     - Name of file containing tower properties (quoted string)---------------------- OUTPUT --------------------------------------------------True          SumPrint    - Print summary data to "<RootName>.sum" (flag)          1   OutFile     - Switch to determine where output will be placed: {1: in module output file only; 2: in glue code output file only; 3: both} (currently unused)True          TabDelim    - Use tab delimiters in text tabular output file? (flag) (currently unused)"ES10.3E2"    OutFmt      - Format used for text tabular output (except time).  Resulting field should be 10 characters. (quoted string) (currently unused)         10   TStart      - Time to begin tabular output (s) (currently unused)          8   DecFact     - Decimation factor for tabular output {1: output every time step} (-) (currently unused)          0   NTwGages    - Number of tower nodes that have strain gages for output [0 to 9] (-)          0   TwrGagNd    - List of tower nodes that have strain gages [1 to TwrNodes] (-) [unused if NTwGages=0]          0   NBlGages    - Number of blade nodes that have strain gages for output [0 to 9] (-)          0   BldGagNd    - List of blade nodes that have strain gages [1 to BldNodes] (-) [unused if NBlGages=0]              OutList     - The next line(s) contains a list of output parameters.  See OutListParameters.xlsx for a listing of available output channels, (-)"RotSpeed"                - Tower-top / yaw bearing axial force"RotPwr"                  - Rotor power (this is equivalent to the low-speed shaft power)END of input file (the word "END" must appear in the first 3 columns of this last OutList line)---------------------------------------------------------------------------------------`

[b]InflowWind:

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`------- InflowWind v3.01.* INPUT FILE -------------------------------------------------------------------------Turbulent 16 m/s winds at 35m for FAST CertTest #17---------------------------------------------------------------------------------------------------------------False         Echo           - Echo input data to <RootName>.ech (flag)          1   WindType       - switch for wind file type (1=steady; 2=uniform; 3=binary TurbSim FF; 4=binary Bladed-style FF; 5=HAWC format; 6=User defined)  0.0                PropagationDir - Direction of wind propagation (meteoroligical rotation from aligned with X (positive rotates towards -Y) -- degrees)          1   NWindVel       - Number of points to output the wind velocity    (0 to 9)          0   WindVxiList    - List of coordinates in the inertial X direction (m)          0   WindVyiList    - List of coordinates in the inertial Y direction (m)    34.6189   WindVziList    - List of coordinates in the inertial Z direction (m)================== Parameters for Steady Wind Conditions [used only for WindType = 1] =========================      10  HWindSpeed     - Horizontal windspeed                            (m/s)    34.6189   RefHt          - Reference height for horizontal wind speed      (m)        0.2   PLexp          - Power law exponent                              (-)================== Parameters for Uniform wind file   [used only for WindType = 2] ============================"Wind\MyWind2.wnd"    Filename       - Filename of time series data for uniform wind field.      (-)    34.6189   RefHt          - Reference height for horizontal wind speed                (m)        5.8   RefLength      - Reference length for linear horizontal and vertical sheer (-)================== Parameters for Binary TurbSim Full-Field files   [used only for WindType = 3] =============="Wind/Test18"    Filename       - Name of the Full field wind file to use (.bts)================== Parameters for Binary Bladed-style Full-Field files   [used only for WindType = 4] ========="Wind/Test19"    FilenameRoot   - Rootname of the full-field wind file to use (.wnd, .sum)False         TowerFile      - Have tower file (.twr) (flag)================== Parameters for HAWC-format binary files  [Only used with WindType = 5] ====================="wasp\Output\basic_5u.bin"    FileName_u     - name of the file containing the u-component fluctuating wind (.bin)"wasp\Output\basic_5v.bin"    FileName_v     - name of the file containing the v-component fluctuating wind (.bin)"wasp\Output\basic_5w.bin"    FileName_w     - name of the file containing the w-component fluctuating wind (.bin)         64   nx             - number of grids in the x direction (in the 3 files above) (-)         32   ny             - number of grids in the y direction (in the 3 files above) (-)         32   nz             - number of grids in the z direction (in the 3 files above) (-)         16   dx             - distance (in meters) between points in the x direction    (m)          3   dy             - distance (in meters) between points in the y direction    (m)          3   dz             - distance (in meters) between points in the z direction    (m)    34.6189   RefHt          - reference height; the height (in meters) of the vertical center of the grid (m)  -------------   Scaling parameters for turbulence   ---------------------------------------------------------          1   ScaleMethod    - Turbulence scaling method   [0 = none, 1 = direct scaling, 2 = calculate scaling factor based on a desired standard deviation]          1   SFx            - Turbulence scaling factor for the x direction (-)   [ScaleMethod=1]          1   SFy            - Turbulence scaling factor for the y direction (-)   [ScaleMethod=1]          1   SFz            - Turbulence scaling factor for the z direction (-)   [ScaleMethod=1]         12   SigmaFx        - Turbulence standard deviation to calculate scaling from in x direction (m/s)    [ScaleMethod=2]          8   SigmaFy        - Turbulence standard deviation to calculate scaling from in y direction (m/s)    [ScaleMethod=2]          2   SigmaFz        - Turbulence standard deviation to calculate scaling from in z direction (m/s)    [ScaleMethod=2]  -------------   Mean wind profile parameters (added to HAWC-format files)   ---------------------------------          5   URef           - Mean u-component wind speed at the reference height (m/s)          2   WindProfile    - Wind profile type (0=constant;1=logarithmic,2=power law)        0.2   PLExp          - Power law exponent (-) (used for PL wind profile type only)       0.03   Z0             - Surface roughness length (m) (used for LG wind profile type only)====================== OUTPUT ==================================================False         SumPrint     - Print summary data to <RootName>.IfW.sum (flag)              OutList      - The next line(s) contains a list of output parameters.  See OutListParameters.xlsx for a listing of available output channels, (-)"Wind1VelX"               X-direction wind velocity at point WindList(1)"Wind1VelY"               Y-direction wind velocity at point WindList(1)"Wind1VelZ"               Z-direction wind velocity at point WindList(1)END of input file (the word "END" must appear in the first 3 columns of this last OutList line)---------------------------------------------------------------------------------------`

ServoDyn:

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`------- SERVODYN v1.05.* INPUT FILE --------------------------------------------FAST certification Test #17: FAST model of a SWRT 3-bladed upwind turbine.  Note- SWRT rotates in CCW direction- some inputs will be mirror image of the actual turbine. Model properties from "SWRTv1p2.adm" and SWRT "AdamsWT_MakeBladeDat_v12.xls".  JEM Jan., 2004.  Updated by J. Jonkman, NREL, Feb, 2004.---------------------- SIMULATION CONTROL --------------------------------------False         Echo         - Echo input data to <RootName>.ech (flag)      0.001   DT           - Communication interval for controllers (s) (or "default")---------------------- PITCH CONTROL -------------------------------------------          0   PCMode       - Pitch control mode {0: none, 3: user-defined from routine PitchCntrl, 4: user-defined from Simulink/Labview, 5: user-defined from Bladed-style DLL} (switch)     9999.9   TPCOn        - Time to enable active pitch control (s) [unused when PCMode=0]     9999.9   TPitManS(1)  - Time to start override pitch maneuver for blade 1 and end standard pitch control (s)     9999.9   TPitManS(2)  - Time to start override pitch maneuver for blade 2 and end standard pitch control (s)     9999.9   TPitManS(3)  - Time to start override pitch maneuver for blade 3 and end standard pitch control (s) [unused for 2 blades]          2   PitManRat(1) - Pitch rate at which override pitch maneuver heads toward final pitch angle for blade 1 (deg/s)          2   PitManRat(2) - Pitch rate at which override pitch maneuver heads toward final pitch angle for blade 2 (deg/s)          2   PitManRat(3) - Pitch rate at which override pitch maneuver heads toward final pitch angle for blade 3 (deg/s) [unused for 2 blades]          7.5   BlPitchF(1)  - Blade 1 final pitch for pitch maneuvers (degrees)          7.5  BlPitchF(2)  - Blade 2 final pitch for pitch maneuvers (degrees)          7.5   BlPitchF(3)  - Blade 3 final pitch for pitch maneuvers (degrees) [unused for 2 blades]---------------------- GENERATOR AND TORQUE CONTROL ----------------------------         0   VSContrl     - Variable-speed control mode {0: none, 1: simple VS, 3: user-defined from routine UserVSCont, 4: user-defined from Simulink/Labview, 5: user-defined from Bladed-style DLL} (switch)          1   GenModel     - Generator model {1: simple, 2: Thevenin, 3: user-defined from routine UserGen} (switch) [used only when VSContrl=0]         100   GenEff       - Generator efficiency [ignored by the Thevenin and user-defined generator models] (%)True          GenTiStr     - Method to start the generator {T: timed using TimGenOn, F: generator speed using SpdGenOn} (flag)True          GenTiStp     - Method to stop the generator {T: timed using TimGenOf, F: when generator power = 0} (flag)     9999.9   SpdGenOn     - Generator speed to turn on the generator for a startup (HSS speed) (rpm) [used only when GenTiStr=False]          0   TimGenOn     - Time to turn on the generator for a startup (s) [used only when GenTiStr=True]     9999.9   TimGenOf     - Time to turn off the generator (s) [used only when GenTiStp=True]---------------------- SIMPLE VARIABLE-SPEED TORQUE CONTROL --------------------     9999.9   VS_RtGnSp    - Rated generator speed for simple variable-speed generator control (HSS side) (rpm) [used only when VSContrl=1]     9999.9   VS_RtTq      - Rated generator torque/constant generator torque in Region 3 for simple variable-speed generator control (HSS side) (N-m) [used only when VSContrl=1]     9999.9   VS_Rgn2K     - Generator torque constant in Region 2 for simple variable-speed generator control (HSS side) (N-m/rpm^2) [used only when VSContrl=1]     9999.9   VS_SlPc      - Rated generator slip percentage in Region 2 1/2 for simple variable-speed generator control (%) [used only when VSContrl=1]---------------------- SIMPLE INDUCTION GENERATOR ------------------------------     9999.9   SIG_SlPc     - Rated generator slip percentage (%) [used only when VSContrl=0 and GenModel=1]     9999.9   SIG_SySp     - Synchronous (zero-torque) generator speed (rpm) [used only when VSContrl=0 and GenModel=1]     9999.9   SIG_RtTq     - Rated torque (N-m) [used only when VSContrl=0 and GenModel=1]     9999.9   SIG_PORt     - Pull-out ratio (Tpullout/Trated) (-) [used only when VSContrl=0 and GenModel=1]---------------------- THEVENIN-EQUIVALENT INDUCTION GENERATOR -----------------     9999.9   TEC_Freq     - Line frequency [50 or 60] (Hz) [used only when VSContrl=0 and GenModel=2]       9998   TEC_NPol     - Number of poles [even integer > 0] (-) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_SRes     - Stator resistance (ohms) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_RRes     - Rotor resistance (ohms) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_VLL      - Line-to-line RMS voltage (volts) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_SLR      - Stator leakage reactance (ohms) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_RLR      - Rotor leakage reactance (ohms) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_MR       - Magnetizing reactance (ohms) [used only when VSContrl=0 and GenModel=2]---------------------- HIGH-SPEED SHAFT BRAKE ----------------------------------          1   HSSBrMode    - HSS brake model {0: none, 1: simple, 3: user-defined from routine UserHSSBr, 4: user-defined from Simulink/Labview, 5: user-defined from Bladed-style DLL} (switch)     9999.9   THSSBrDp     - Time to initiate deployment of the HSS brake (s)     9999.9   HSSBrDT      - Time for HSS-brake to reach full deployment once initiated (sec) [used only when HSSBrMode=1]     9999.9   HSSBrTqF     - Fully deployed HSS-brake torque (N-m)---------------------- NACELLE-YAW CONTROL -------------------------------------          0   YCMode       - Yaw control mode {0: none, 3: user-defined from routine UserYawCont, 4: user-defined from Simulink/Labview, 5: user-defined from Bladed-style DLL} (switch)     9999.9   TYCOn        - Time to enable active yaw control (s) [unused when YCMode=0]          0   YawNeut      - Neutral yaw position--yaw spring force is zero at this yaw (degrees)          0   YawSpr       - Nacelle-yaw spring constant (N-m/rad)          0   YawDamp      - Nacelle-yaw damping constant (N-m/(rad/s))     9999.9   TYawManS     - Time to start override yaw maneuver and end standard yaw control (s)          2   YawManRat    - Yaw maneuver rate (in absolute value) (deg/s)          0   NacYawF      - Final yaw angle for override yaw maneuvers (degrees)---------------------- TUNED MASS DAMPER ---------------------------------------False         CompNTMD     - Compute nacelle tuned mass damper {true/false} (flag)"unused"      NTMDfile     - Name of the file for nacelle tuned mass damper (quoted string) [unused when CompNTMD is false]False         CompTTMD     - Compute tower tuned mass damper {true/false} (flag)"unused"      TTMDfile     - Name of the file for tower tuned mass damper (quoted string) [unused when CompTTMD is false]---------------------- BLADED INTERFACE ---------------------------------------- [used only with Bladed Interface]"unused"      DLL_FileName - Name/location of the dynamic library {.dll [Windows] or .so [Linux]} in the Bladed-DLL format (-) [used only with Bladed Interface]"DISCON.IN"    DLL_InFile   - Name of input file sent to the DLL (-) [used only with Bladed Interface]"DISCON"      DLL_ProcName - Name of procedure in DLL to be called (-) [case sensitive; used only with DLL Interface]"default"     DLL_DT       - Communication interval for dynamic library (s) (or "default") [used only with Bladed Interface]false         DLL_Ramp     - Whether a linear ramp should be used between DLL_DT time steps [introduces time shift when true] (flag) [used only with Bladed Interface]     9999.9   BPCutoff     - Cuttoff frequency for low-pass filter on blade pitch from DLL (Hz) [used only with Bladed Interface]          0   NacYaw_North - Reference yaw angle of the nacelle when the upwind end points due North (deg) [used only with Bladed Interface]          0   Ptch_Cntrl   - Record 28: Use individual pitch control {0: collective pitch; 1: individual pitch control} (switch) [used only with Bladed Interface]          0   Ptch_SetPnt  - Record  5: Below-rated pitch angle set-point (deg) [used only with Bladed Interface]          0   Ptch_Min     - Record  6: Minimum pitch angle (deg) [used only with Bladed Interface]          0   Ptch_Max     - Record  7: Maximum pitch angle (deg) [used only with Bladed Interface]          0   PtchRate_Min - Record  8: Minimum pitch rate (most negative value allowed) (deg/s) [used only with Bladed Interface]          0   PtchRate_Max - Record  9: Maximum pitch rate  (deg/s) [used only with Bladed Interface]          0   Gain_OM      - Record 16: Optimal mode gain (Nm/(rad/s)^2) [used only with Bladed Interface]          0   GenSpd_MinOM - Record 17: Minimum generator speed (rpm) [used only with Bladed Interface]          0   GenSpd_MaxOM - Record 18: Optimal mode maximum speed (rpm) [used only with Bladed Interface]          0   GenSpd_Dem   - Record 19: Demanded generator speed above rated (rpm) [used only with Bladed Interface]          0   GenTrq_Dem   - Record 22: Demanded generator torque above rated (Nm) [used only with Bladed Interface]          0   GenPwr_Dem   - Record 13: Demanded power (W) [used only with Bladed Interface]---------------------- BLADED INTERFACE TORQUE-SPEED LOOK-UP TABLE -------------          0   DLL_NumTrq   - Record 26: No. of points in torque-speed look-up table {0 = none and use the optimal mode parameters; nonzero = ignore the optimal mode PARAMETERs by setting Record 16 to 0.0} (-) [used only with Bladed Interface] GenSpd_TLU   GenTrq_TLU (rpm)          (Nm)---------------------- OUTPUT --------------------------------------------------True          SumPrint     - Print summary data to <RootName>.sum (flag) (currently unused)          1   OutFile      - Switch to determine where output will be placed: {1: in module output file only; 2: in glue code output file only; 3: both} (currently unused)True          TabDelim     - Use tab delimiters in text tabular output file? (flag) (currently unused)"ES10.3E2"    OutFmt       - Format used for text tabular output (except time).  Resulting field should be 10 characters. (quoted string) (currently unused)         0   TStart       - Time to begin tabular output (s) (currently unused)              OutList      - The next line(s) contains a list of output parameters.  See OutListParameters.xlsx for a listing of available output channels, (-)"GenPwr"END of input file (the word "END" must appear in the first 3 columns of this last OutList line)---------------------------------------------------------------------------------------`

AeroDyn:

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`------- AERODYN v15.03.* INPUT FILE ------------------------------------------------SWRT rotor aerodynamic parameters for FAST certification tests #15-#17.======  General Options  ============================================================================False         Echo               - Echo the input to "<rootname>.AD.ech"?  (flag)"DEFAULT"     DTAero             - Time interval for aerodynamic calculations {or "default"} (s)          1   WakeMod            - Type of wake/induction model (switch) {0=none, 1=BEMT}          1   AFAeroMod          - Type of blade airfoil aerodynamics model (switch) {1=steady model, 2=Beddoes-Leishman unsteady model}          0   TwrPotent          - Type tower influence on wind based on potential flow around the tower (switch) {0=none, 1=baseline potential flow, 2=potential flow with Bak correction}False         TwrShadow          – Calculate tower influence on wind based on downstream tower shadow? (flag)False         TwrAero            - Calculate tower aerodynamic loads? (flag)False         FrozenWake         - Assume frozen wake during linearization? (flag) [used only when WakeMod=1 and when linearizing]======  Environmental Conditions  ===================================================================      1.225   AirDens            - Air density (kg/m^3)   1.51E-05   KinVisc            - Kinematic air viscosity (m^2/s)        335   SpdSound           - Speed of sound (m/s)======  Blade-Element/Momentum Theory Options  ====================================================== [used only when WakeMod=1]          2   SkewMod            - Type of skewed-wake correction model (switch) {1=uncoupled, 2=Pitt/Peters, 3=coupled} [used only when WakeMod=1]True          TipLoss            - Use the Prandtl tip-loss model? (flag) [used only when WakeMod=1]False         HubLoss            - Use the Prandtl hub-loss model? (flag) [used only when WakeMod=1]true          TanInd             - Include tangential induction in BEMT calculations? (flag) [used only when WakeMod=1]False         AIDrag             - Include the drag term in the axial-induction calculation? (flag) [used only when WakeMod=1]False         TIDrag             - Include the drag term in the tangential-induction calculation? (flag) [used only when WakeMod=1 and TanInd=TRUE]"Default"     IndToler           - Convergence tolerance for BEMT nonlinear solve residual equation {or "default"} (-) [used only when WakeMod=1]        100   MaxIter            - Maximum number of iteration steps (-) [used only when WakeMod=1]======  Beddoes-Leishman Unsteady Airfoil Aerodynamics Options  ===================================== [used only when AFAeroMod=2]          3   UAMod              - Unsteady Aero Model Switch (switch) {1=Baseline model (Original), 2=Gonzalez’s variant (changes in Cn,Cc,Cm), 3=Minemma/Pierce variant (changes in Cc and Cm)} [used only when AFAeroMod=2]True          FLookup            - Flag to indicate whether a lookup for f' will be calculated (TRUE) or whether best-fit exponential equations will be used (FALSE); if FALSE S1-S4 must be provided in airfoil input files (flag) [used only when AFAeroMod=2]======  Airfoil Information =========================================================================          1   InCol_Alfa         - The column in the airfoil tables that contains the angle of attack (-)          2   InCol_Cl           - The column in the airfoil tables that contains the lift coefficient (-)          3   InCol_Cd           - The column in the airfoil tables that contains the drag coefficient (-)          0   InCol_Cm           - The column in the airfoil tables that contains the pitching-moment coefficient; use zero if there is no Cm column (-)          0   InCol_Cpmin        - The column in the airfoil tables that contains the Cpmin coefficient; use zero if there is no Cpmin column (-)          4   NumAFfiles         - Number of airfoil files used (-)"Airfoils/TailPlate.dat"    AFNames            - Airfoil file names (NumAFfiles lines) (quoted strings)"Airfoils/SH3052Mod_AllRe_Hanley.dat""Airfoils/SH3052Mod_AllRe_Elem14_Hanley.dat""Airfoils/SH3052Mod_AllRe_Elem15_Hanley.dat"======  Rotor/Blade Properties  =====================================================================False         UseBlCm            - Include aerodynamic pitching moment in calculations?  (flag)"SWRT_AeroDyn_blade.dat"    ADBlFile(1)        - Name of file containing distributed aerodynamic properties for Blade #1 (-)"SWRT_AeroDyn_blade.dat"    ADBlFile(2)        - Name of file containing distributed aerodynamic properties for Blade #2 (-) [unused if NumBl < 2]"SWRT_AeroDyn_blade.dat"    ADBlFile(3)        - Name of file containing distributed aerodynamic properties for Blade #3 (-) [unused if NumBl < 3]======  Tower Influence and Aerodynamics ============================================================= [used only when TwrPotent/=0, TwrShadow=True, or TwrAero=True]          2   NumTwrNds         - Number of tower nodes used in the analysis  (-) [used only when TwrPotent/=0, TwrShadow=True, or TwrAero=True]TwrElev        TwrDiam        TwrCd(m)              (m)           (-)0.0000000E+00  1.4220000E+00  0.0000000E+003.4000000E+01  3.5550000E-01  0.0000000E+00======  Outputs  ====================================================================================True          SumPrint            - Generate a summary file listing input options and interpolated properties to "<rootname>.AD.sum"?  (flag)          0   NBlOuts             - Number of blade node outputs [0 - 9] (-)          2,          8,         16    BlOutNd             - Blade nodes whose values will be output  (-)          0   NTwOuts             - Number of tower node outputs [0 - 9]  (-)          1,          2    TwOutNd             - Tower nodes whose values will be output  (-)                   OutList             - The next line(s) contains a list of output parameters.  See OutListParameters.xlsx for a listing of available output channels, (-)"RtTSR""RtAeroCp""RtSpeed""RtAeroPwr"END of input file (the word "END" must appear in the first 3 columns of this last OutList line)---------------------------------------------------------------------------------------`

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 11:55 am
And files for 1.5MW turbine:

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`------- FAST v8.16.* INPUT FILE ------------------------------------------------FAST Certification Test #13: WindPACT 1.5 MW Baseline with many DOFs with VS and VP and FF turbulence.---------------------- SIMULATION CONTROL --------------------------------------False         Echo            - Echo input data to <RootName>.ech (flag)"FATAL"       AbortLevel      - Error level when simulation should abort (string) {"WARNING", "SEVERE", "FATAL"}         40   TMax            - Total run time (s)      0.005   DT              - Recommended module time step (s)          2   InterpOrder     - Interpolation order for input/output time history (-) {1=linear, 2=quadratic}          0   NumCrctn        - Number of correction iterations (-) {0=explicit calculation, i.e., no corrections}      99999   DT_UJac         - Time between calls to get Jacobians (s)      1E+06   UJacSclFact     - Scaling factor used in Jacobians (-)---------------------- FEATURE SWITCHES AND FLAGS ------------------------------          1   CompElast       - Compute structural dynamics (switch) {1=ElastoDyn; 2=ElastoDyn + BeamDyn for blades}          1   CompInflow      - Compute inflow wind velocities (switch) {0=still air; 1=InflowWind; 2=external from OpenFOAM}          2   CompAero        - Compute aerodynamic loads (switch) {0=None; 1=AeroDyn v14; 2=AeroDyn v15}          1   CompServo       - Compute control and electrical-drive dynamics (switch) {0=None; 1=ServoDyn}          0   CompHydro       - Compute hydrodynamic loads (switch) {0=None; 1=HydroDyn}          0   CompSub         - Compute sub-structural dynamics (switch) {0=None; 1=SubDyn}          0   CompMooring     - Compute mooring system (switch) {0=None; 1=MAP++; 2=FEAMooring; 3=MoorDyn; 4=OrcaFlex}          0   CompIce         - Compute ice loads (switch) {0=None; 1=IceFloe; 2=IceDyn}---------------------- INPUT FILES ---------------------------------------------"WP_Baseline/Test13_ElastoDyn.dat"    EDFile          - Name of file containing ElastoDyn input parameters (quoted string)"unused"      BDBldFile(1)    - Name of file containing BeamDyn input parameters for blade 1 (quoted string)"unused"      BDBldFile(2)    - Name of file containing BeamDyn input parameters for blade 2 (quoted string)"unused"      BDBldFile(3)    - Name of file containing BeamDyn input parameters for blade 3 (quoted string)"WP_Baseline/WP_Baseline_InflowWind_12mps.dat"    InflowFile      - Name of file containing inflow wind input parameters (quoted string)"WP_Baseline/WP_Baseline_AeroDyn15_Dynin.dat"    AeroFile        - Name of file containing aerodynamic input parameters (quoted string)"WP_Baseline/Test13_ServoDyn.dat"    ServoFile       - Name of file containing control and electrical-drive input parameters (quoted string)"unused"      HydroFile       - Name of file containing hydrodynamic input parameters (quoted string)"unused"      SubFile         - Name of file containing sub-structural input parameters (quoted string)"unused"      MooringFile     - Name of file containing mooring system input parameters (quoted string)"unused"      IceFile         - Name of file containing ice input parameters (quoted string)---------------------- OUTPUT --------------------------------------------------True          SumPrint        - Print summary data to "<RootName>.sum" (flag)          1   SttsTime        - Amount of time between screen status messages (s)      99999   ChkptTime       - Amount of time between creating checkpoint files for potential restart (s)       0.05   DT_Out          - Time step for tabular output (s) (or "default")          0   TStart          - Time to begin tabular output (s)          1   OutFileFmt      - Format for tabular (time-marching) output file (switch) {1: text file [<RootName>.out], 2: binary file [<RootName>.outb], 3: both}True          TabDelim        - Use tab delimiters in text tabular output file? (flag) {uses spaces if false}"ES10.3E2"    OutFmt          - Format used for text tabular output, excluding the time channel.  Resulting field should be 10 characters. (quoted string)---------------------- LINEARIZATION -------------------------------------------False         Linearize       - Linearization analysis (flag)          2   NLinTimes       - Number of times to linearize (-) [>=1] [unused if Linearize=False]         30,         60    LinTimes        - List of times at which to linearize (s) [1 to NLinTimes] [unused if Linearize=False]          1   LinInputs       - Inputs included in linearization (switch) {0=none; 1=standard; 2=all module inputs (debug)} [unused if Linearize=False]          1   LinOutputs      - Outputs included in linearization (switch) {0=none; 1=from OutList(s); 2=all module outputs (debug)} [unused if Linearize=False]False         LinOutJac       - Include full Jacobians in linearization output (for debug) (flag) [unused if Linearize=False; used only if LinInputs=LinOutputs=2]False         LinOutMod       - Write module-level linearization output files in addition to output for full system? (flag) [unused if Linearize=False]---------------------- VISUALIZATION ------------------------------------------          0   WrVTK           - VTK visualization data output: (switch) {0=none; 1=initialization data only; 2=animation}          2   VTK_type        - Type of VTK visualization data: (switch) {1=surfaces; 2=basic meshes (lines/points); 3=all meshes (debug)} [unused if WrVTK=0]false         VTK_fields      - Write mesh fields to VTK data files? (flag) {true/false} [unused if WrVTK=0]         15   VTK_fps         - Frame rate for VTK output (frames per second){will use closest integer multiple of DT} [used only if WrVTK=2]`

ServoDyn:

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`------- SERVODYN v1.05.* INPUT FILE --------------------------------------------FAST certification Test #13: WindPACT 1.5 MW Baseline with many DOFs with VS and VP and FF turbulence. Model properties from "InputData1.5A08V07adm.xls" (from C. Hansen) with bugs removed.---------------------- SIMULATION CONTROL --------------------------------------False         Echo         - Echo input data to <RootName>.ech (flag)      0.005   DT           - Communication interval for controllers (s) (or "default")---------------------- PITCH CONTROL -------------------------------------------          3   PCMode       - Pitch control mode {0: none, 3: user-defined from routine PitchCntrl, 4: user-defined from Simulink/Labview, 5: user-defined from Bladed-style DLL} (switch)          5   TPCOn        - Time to enable active pitch control (s) [unused when PCMode=0]     9999.9   TPitManS(1)  - Time to start override pitch maneuver for blade 1 and end standard pitch control (s)     9999.9   TPitManS(2)  - Time to start override pitch maneuver for blade 2 and end standard pitch control (s)     9999.9   TPitManS(3)  - Time to start override pitch maneuver for blade 3 and end standard pitch control (s) [unused for 2 blades]          2   PitManRat(1) - Pitch rate at which override pitch maneuver heads toward final pitch angle for blade 1 (deg/s)          2   PitManRat(2) - Pitch rate at which override pitch maneuver heads toward final pitch angle for blade 2 (deg/s)          2   PitManRat(3) - Pitch rate at which override pitch maneuver heads toward final pitch angle for blade 3 (deg/s) [unused for 2 blades]        2.6   BlPitchF(1)  - Blade 1 final pitch for pitch maneuvers (degrees)        2.6   BlPitchF(2)  - Blade 2 final pitch for pitch maneuvers (degrees)        2.6   BlPitchF(3)  - Blade 3 final pitch for pitch maneuvers (degrees) [unused for 2 blades]---------------------- GENERATOR AND TORQUE CONTROL ----------------------------          1   VSContrl     - Variable-speed control mode {0: none, 1: simple VS, 3: user-defined from routine UserVSCont, 4: user-defined from Simulink/Labview, 5: user-defined from Bladed-style DLL} (switch)          1   GenModel     - Generator model {1: simple, 2: Thevenin, 3: user-defined from routine UserGen} (switch) [used only when VSContrl=0]         100   GenEff       - Generator efficiency [ignored by the Thevenin and user-defined generator models] (%)True          GenTiStr     - Method to start the generator {T: timed using TimGenOn, F: generator speed using SpdGenOn} (flag)True          GenTiStp     - Method to stop the generator {T: timed using TimGenOf, F: when generator power = 0} (flag)     9999.9   SpdGenOn     - Generator speed to turn on the generator for a startup (HSS speed) (rpm) [used only when GenTiStr=False]          0   TimGenOn     - Time to turn on the generator for a startup (s) [used only when GenTiStr=True]     9999.9   TimGenOf     - Time to turn off the generator (s) [used only when GenTiStp=True]---------------------- SIMPLE VARIABLE-SPEED TORQUE CONTROL --------------------       1800   VS_RtGnSp    - Rated generator speed for simple variable-speed generator control (HSS side) (rpm) [used only when VSContrl=1]    8376.58   VS_RtTq      - Rated generator torque/constant generator torque in Region 3 for simple variable-speed generator control (HSS side) (N-m) [used only when VSContrl=1]   0.002585   VS_Rgn2K     - Generator torque constant in Region 2 for simple variable-speed generator control (HSS side) (N-m/rpm^2) [used only when VSContrl=1] 9.9999E-06   VS_SlPc      - Rated generator slip percentage in Region 2 1/2 for simple variable-speed generator control (%) [used only when VSContrl=1]---------------------- SIMPLE INDUCTION GENERATOR ------------------------------     9999.9   SIG_SlPc     - Rated generator slip percentage (%) [used only when VSContrl=0 and GenModel=1]     9999.9   SIG_SySp     - Synchronous (zero-torque) generator speed (rpm) [used only when VSContrl=0 and GenModel=1]     9999.9   SIG_RtTq     - Rated torque (N-m) [used only when VSContrl=0 and GenModel=1]     9999.9   SIG_PORt     - Pull-out ratio (Tpullout/Trated) (-) [used only when VSContrl=0 and GenModel=1]---------------------- THEVENIN-EQUIVALENT INDUCTION GENERATOR -----------------     9999.9   TEC_Freq     - Line frequency [50 or 60] (Hz) [used only when VSContrl=0 and GenModel=2]       9998   TEC_NPol     - Number of poles [even integer > 0] (-) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_SRes     - Stator resistance (ohms) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_RRes     - Rotor resistance (ohms) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_VLL      - Line-to-line RMS voltage (volts) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_SLR      - Stator leakage reactance (ohms) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_RLR      - Rotor leakage reactance (ohms) [used only when VSContrl=0 and GenModel=2]     9999.9   TEC_MR       - Magnetizing reactance (ohms) [used only when VSContrl=0 and GenModel=2]---------------------- HIGH-SPEED SHAFT BRAKE ----------------------------------          0   HSSBrMode    - HSS brake model {0: none, 1: simple, 3: user-defined from routine UserHSSBr, 4: user-defined from Simulink/Labview, 5: user-defined from Bladed-style DLL} (switch)     9999.9   THSSBrDp     - Time to initiate deployment of the HSS brake (s)     9999.9   HSSBrDT      - Time for HSS-brake to reach full deployment once initiated (sec) [used only when HSSBrMode=1]     9999.9   HSSBrTqF     - Fully deployed HSS-brake torque (N-m)---------------------- NACELLE-YAW CONTROL -------------------------------------          0   YCMode       - Yaw control mode {0: none, 3: user-defined from routine UserYawCont, 4: user-defined from Simulink/Labview, 5: user-defined from Bladed-style DLL} (switch)     9999.9   TYCOn        - Time to enable active yaw control (s) [unused when YCMode=0]          0   YawNeut      - Neutral yaw position--yaw spring force is zero at this yaw (degrees)          0   YawSpr       - Nacelle-yaw spring constant (N-m/rad)          0   YawDamp      - Nacelle-yaw damping constant (N-m/(rad/s))     9999.9   TYawManS     - Time to start override yaw maneuver and end standard yaw control (s)          2   YawManRat    - Yaw maneuver rate (in absolute value) (deg/s)          0   NacYawF      - Final yaw angle for override yaw maneuvers (degrees)---------------------- TUNED MASS DAMPER ---------------------------------------False         CompNTMD     - Compute nacelle tuned mass damper {true/false} (flag)"unused"      NTMDfile     - Name of the file for nacelle tuned mass damper (quoted string) [unused when CompNTMD is false]False         CompTTMD     - Compute tower tuned mass damper {true/false} (flag)"unused"      TTMDfile     - Name of the file for tower tuned mass damper (quoted string) [unused when CompTTMD is false]---------------------- BLADED INTERFACE ---------------------------------------- [used only with Bladed Interface]"unused"      DLL_FileName - Name/location of the dynamic library {.dll [Windows] or .so [Linux]} in the Bladed-DLL format (-) [used only with Bladed Interface]"DISCON.IN"    DLL_InFile   - Name of input file sent to the DLL (-) [used only with Bladed Interface]"DISCON"      DLL_ProcName - Name of procedure in DLL to be called (-) [case sensitive; used only with DLL Interface]"default"     DLL_DT       - Communication interval for dynamic library (s) (or "default") [used only with Bladed Interface]false         DLL_Ramp     - Whether a linear ramp should be used between DLL_DT time steps [introduces time shift when true] (flag) [used only with Bladed Interface]     9999.9   BPCutoff     - Cuttoff frequency for low-pass filter on blade pitch from DLL (Hz) [used only with Bladed Interface]          0   NacYaw_North - Reference yaw angle of the nacelle when the upwind end points due North (deg) [used only with Bladed Interface]          0   Ptch_Cntrl   - Record 28: Use individual pitch control {0: collective pitch; 1: individual pitch control} (switch) [used only with Bladed Interface]          0   Ptch_SetPnt  - Record  5: Below-rated pitch angle set-point (deg) [used only with Bladed Interface]          0   Ptch_Min     - Record  6: Minimum pitch angle (deg) [used only with Bladed Interface]          0   Ptch_Max     - Record  7: Maximum pitch angle (deg) [used only with Bladed Interface]          0   PtchRate_Min - Record  8: Minimum pitch rate (most negative value allowed) (deg/s) [used only with Bladed Interface]          0   PtchRate_Max - Record  9: Maximum pitch rate  (deg/s) [used only with Bladed Interface]          0   Gain_OM      - Record 16: Optimal mode gain (Nm/(rad/s)^2) [used only with Bladed Interface]          0   GenSpd_MinOM - Record 17: Minimum generator speed (rpm) [used only with Bladed Interface]          0   GenSpd_MaxOM - Record 18: Optimal mode maximum speed (rpm) [used only with Bladed Interface]          0   GenSpd_Dem   - Record 19: Demanded generator speed above rated (rpm) [used only with Bladed Interface]          0   GenTrq_Dem   - Record 22: Demanded generator torque above rated (Nm) [used only with Bladed Interface]          0   GenPwr_Dem   - Record 13: Demanded power (W) [used only with Bladed Interface]---------------------- BLADED INTERFACE TORQUE-SPEED LOOK-UP TABLE -------------          0   DLL_NumTrq   - Record 26: No. of points in torque-speed look-up table {0 = none and use the optimal mode parameters; nonzero = ignore the optimal mode PARAMETERs by setting Record 16 to 0.0} (-) [used only with Bladed Interface] GenSpd_TLU   GenTrq_TLU (rpm)          (Nm)---------------------- OUTPUT --------------------------------------------------True          SumPrint     - Print summary data to <RootName>.sum (flag) (currently unused)          1   OutFile      - Switch to determine where output will be placed: {1: in module output file only; 2: in glue code output file only; 3: both} (currently unused)True          TabDelim     - Use tab delimiters in text tabular output file? (flag) (currently unused)"ES10.3E2"    OutFmt       - Format used for text tabular output (except time).  Resulting field should be 10 characters. (quoted string) (currently unused)          0   TStart       - Time to begin tabular output (s) (currently unused)              OutList      - The next line(s) contains a list of output parameters.  See OutListParameters.xlsx for a listing of available output channels, (-)END of input file (the word "END" must appear in the first 3 columns of this last OutList line)---------------------------------------------------------------------------------------`

InflowWind:

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`------- InflowWind v3.01.* INPUT FILE -------------------------------------------------------------------------Turbulent 12 m/s winds for FAST CertTests #11 and #13---------------------------------------------------------------------------------------------------------------False         Echo           - Echo input data to <RootName>.ech (flag)          1   WindType       - switch for wind file type (1=steady; 2=uniform; 3=binary TurbSim FF; 4=binary Bladed-style FF; 5=HAWC format; 6=User defined)          0   PropagationDir - Direction of wind propagation (meteoroligical rotation from aligned with X (positive rotates towards -Y) -- degrees)          1   NWindVel       - Number of points to output the wind velocity    (0 to 9)          0   WindVxiList    - List of coordinates in the inertial X direction (m)          0   WindVyiList    - List of coordinates in the inertial Y direction (m)    84.2876   WindVziList    - List of coordinates in the inertial Z direction (m)================== Parameters for Steady Wind Conditions [used only for WindType = 1] =========================         10   HWindSpeed     - Horizontal windspeed                            (m/s)    84.2876   RefHt          - Reference height for horizontal wind speed      (m)        0.2   PLexp          - Power law exponent                              (-)================== Parameters for Uniform wind file   [used only for WindType = 2] ============================"Wind/84m_12mps.wnd"    Filename       - Filename of time series data for uniform wind field.      (-)    84.2876   RefHt          - Reference height for horizontal wind speed                (m)         70   RefLength      - Reference length for linear horizontal and vertical sheer (-)================== Parameters for Binary TurbSim Full-Field files   [used only for WindType = 3] =============="Wind/84m_12mps.wnd"    Filename       - Name of the Full field wind file to use (.bts)================== Parameters for Binary Bladed-style Full-Field files   [used only for WindType = 4] ========="Wind/84m_12mps"    FilenameRoot   - Rootname of the full-field wind file to use (.wnd, .sum)False         TowerFile      - Have tower file (.twr) (flag)================== Parameters for HAWC-format binary files  [Only used with WindType = 5] ====================="wasp\Output\basic_5u.bin"    FileName_u     - name of the file containing the u-component fluctuating wind (.bin)"wasp\Output\basic_5v.bin"    FileName_v     - name of the file containing the v-component fluctuating wind (.bin)"wasp\Output\basic_5w.bin"    FileName_w     - name of the file containing the w-component fluctuating wind (.bin)         64   nx             - number of grids in the x direction (in the 3 files above) (-)         32   ny             - number of grids in the y direction (in the 3 files above) (-)         32   nz             - number of grids in the z direction (in the 3 files above) (-)         16   dx             - distance (in meters) between points in the x direction    (m)          3   dy             - distance (in meters) between points in the y direction    (m)          3   dz             - distance (in meters) between points in the z direction    (m)    84.2876   RefHt          - reference height; the height (in meters) of the vertical center of the grid (m)  -------------   Scaling parameters for turbulence   ---------------------------------------------------------          1   ScaleMethod    - Turbulence scaling method   [0 = none, 1 = direct scaling, 2 = calculate scaling factor based on a desired standard deviation]          1   SFx            - Turbulence scaling factor for the x direction (-)   [ScaleMethod=1]          1   SFy            - Turbulence scaling factor for the y direction (-)   [ScaleMethod=1]          1   SFz            - Turbulence scaling factor for the z direction (-)   [ScaleMethod=1]         12   SigmaFx        - Turbulence standard deviation to calculate scaling from in x direction (m/s)    [ScaleMethod=2]          8   SigmaFy        - Turbulence standard deviation to calculate scaling from in y direction (m/s)    [ScaleMethod=2]          2   SigmaFz        - Turbulence standard deviation to calculate scaling from in z direction (m/s)    [ScaleMethod=2]  -------------   Mean wind profile parameters (added to HAWC-format files)   ---------------------------------          5   URef           - Mean u-component wind speed at the reference height (m/s)          2   WindProfile    - Wind profile type (0=constant;1=logarithmic,2=power law)        0.2   PLExp          - Power law exponent (-) (used for PL wind profile type only)       0.03   Z0             - Surface roughness length (m) (used for LG wind profile type only)====================== OUTPUT ==================================================False         SumPrint     - Print summary data to <RootName>.IfW.sum (flag)              OutList      - The next line(s) contains a list of output parameters.  See OutListParameters.xlsx for a listing of available output channels, (-)"Wind1VelX"               X-direction wind velocity at point WindList(1)"Wind1VelY"               Y-direction wind velocity at point WindList(1)"Wind1VelZ"               Z-direction wind velocity at point WindList(1)END of input file (the word "END" must appear in the first 3 columns of this last OutList line)---------------------------------------------------------------------------------------`

ElastoDyn:

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`------- ELASTODYN v1.03.* INPUT FILE -------------------------------------------FAST certification Test #13: WindPACT 1.5 MW Baseline with many DOFs with VS and VP and FF turbulence. Model properties from "InputData1.5A08V07adm.xls" (from C. Hansen) with bugs removed.---------------------- SIMULATION CONTROL --------------------------------------False         Echo        - Echo input data to "<RootName>.ech" (flag)          3   Method      - Integration method: {1: RK4, 2: AB4, or 3: ABM4} (-)      0.005   DT          - Integration time step (s)---------------------- ENVIRONMENTAL CONDITION ---------------------------------    9.80665   Gravity     - Gravitational acceleration (m/s^2)---------------------- DEGREES OF FREEDOM --------------------------------------False          FlapDOF1    - First flapwise blade mode DOF (flag)False          FlapDOF2    - Second flapwise blade mode DOF (flag)False           EdgeDOF     - First edgewise blade mode DOF (flag)False         TeetDOF     - Rotor-teeter DOF (flag) [unused for 3 blades]False          DrTrDOF     - Drivetrain rotational-flexibility DOF (flag)False          GenDOF      - Generator DOF (flag)False         YawDOF      - Yaw DOF (flag)False           TwFADOF1    - First fore-aft tower bending-mode DOF (flag)False           TwFADOF2    - Second fore-aft tower bending-mode DOF (flag)False           TwSSDOF1    - First side-to-side tower bending-mode DOF (flag)False           TwSSDOF2    - Second side-to-side tower bending-mode DOF (flag)False         PtfmSgDOF   - Platform horizontal surge translation DOF (flag)False         PtfmSwDOF   - Platform horizontal sway translation DOF (flag)False         PtfmHvDOF   - Platform vertical heave translation DOF (flag)False         PtfmRDOF    - Platform roll tilt rotation DOF (flag)False         PtfmPDOF    - Platform pitch tilt rotation DOF (flag)False         PtfmYDOF    - Platform yaw rotation DOF (flag)---------------------- INITIAL CONDITIONS --------------------------------------          0   OoPDefl     - Initial out-of-plane blade-tip displacement (meters)          0   IPDefl      - Initial in-plane blade-tip deflection (meters)        2.6   BlPitch(1)  - Blade 1 initial pitch (degrees)        2.6   BlPitch(2)  - Blade 2 initial pitch (degrees)        2.6   BlPitch(3)  - Blade 3 initial pitch (degrees) [unused for 2 blades]          0   TeetDefl    - Initial or fixed teeter angle (degrees) [unused for 3 blades]          0   Azimuth     - Initial azimuth angle for blade 1 (degrees)    19.0986   RotSpeed    - Initial or fixed rotor speed (rpm)          0   NacYaw      - Initial or fixed nacelle-yaw angle (degrees)          0   TTDspFA     - Initial fore-aft tower-top displacement (meters)          0   TTDspSS     - Initial side-to-side tower-top displacement (meters)          0   PtfmSurge   - Initial or fixed horizontal surge translational displacement of platform (meters)          0   PtfmSway    - Initial or fixed horizontal sway translational displacement of platform (meters)          0   PtfmHeave   - Initial or fixed vertical heave translational displacement of platform (meters)          0   PtfmRoll    - Initial or fixed roll tilt rotational displacement of platform (degrees)          0   PtfmPitch   - Initial or fixed pitch tilt rotational displacement of platform (degrees)          0   PtfmYaw     - Initial or fixed yaw rotational displacement of platform (degrees)---------------------- TURBINE CONFIGURATION -----------------------------------          3   NumBl       - Number of blades (-)         35   TipRad      - The distance from the rotor apex to the blade tip (meters)       1.75   HubRad      - The distance from the rotor apex to the blade root (meters)          0   PreCone(1)  - Blade 1 cone angle (degrees)          0   PreCone(2)  - Blade 2 cone angle (degrees)          0   PreCone(3)  - Blade 3 cone angle (degrees) [unused for 2 blades]          0   HubCM       - Distance from rotor apex to hub mass [positive downwind] (meters)          0   UndSling    - Undersling length [distance from teeter pin to the rotor apex] (meters) [unused for 3 blades]          0   Delta3      - Delta-3 angle for teetering rotors (degrees) [unused for 3 blades]          0   AzimB1Up    - Azimuth value to use for I/O when blade 1 points up (degrees)       -3.3   OverHang    - Distance from yaw axis to rotor apex [3 blades] or teeter pin [2 blades] (meters)       0.99   ShftGagL    - Distance from rotor apex [3 blades] or teeter pin [2 blades] to shaft strain gages [positive for upwind rotors] (meters)         -5   ShftTilt    - Rotor shaft tilt angle (degrees)    -0.1449   NacCMxn     - Downwind distance from the tower-top to the nacelle CM (meters)          0   NacCMyn     - Lateral  distance from the tower-top to the nacelle CM (meters)      1.389   NacCMzn     - Vertical distance from the tower-top to the nacelle CM (meters)          0   NcIMUxn     - Downwind distance from the tower-top to the nacelle IMU (meters)          0   NcIMUyn     - Lateral  distance from the tower-top to the nacelle IMU (meters)          0   NcIMUzn     - Vertical distance from the tower-top to the nacelle IMU (meters)       1.61   Twr2Shft    - Vertical distance from the tower-top to the rotor shaft (meters)      82.39   TowerHt     - Height of tower above ground level [onshore] or MSL [offshore] (meters)          0   TowerBsHt   - Height of tower base above ground level [onshore] or MSL [offshore] (meters)          0   PtfmCMxt    - Downwind distance from the ground level [onshore] or MSL [offshore] to the platform CM (meters)          0   PtfmCMyt    - Lateral distance from the ground level [onshore] or MSL [offshore] to the platform CM (meters)         -0   PtfmCMzt    - Vertical distance from the ground level [onshore] or MSL [offshore] to the platform CM (meters)         -0   PtfmRefzt   - Vertical distance from the ground level [onshore] or MSL [offshore] to the platform reference point (meters)---------------------- MASS AND INERTIA ----------------------------------------          0   TipMass(1)  - Tip-brake mass, blade 1 (kg)          0   TipMass(2)  - Tip-brake mass, blade 2 (kg)          0   TipMass(3)  - Tip-brake mass, blade 3 (kg) [unused for 2 blades]      15148   HubMass     - Hub mass (kg)      34600   HubIner     - Hub inertia about rotor axis [3 blades] or teeter axis [2 blades] (kg m^2)     53.036   GenIner     - Generator inertia about HSS (kg m^2)      51170   NacMass     - Nacelle mass (kg)      49130   NacYIner    - Nacelle inertia about yaw axis (kg m^2)          0   YawBrMass   - Yaw bearing mass (kg)          0   PtfmMass    - Platform mass (kg)          0   PtfmRIner   - Platform inertia for roll tilt rotation about the platform CM (kg m^2)          0   PtfmPIner   - Platform inertia for pitch tilt rotation about the platform CM (kg m^2)          0   PtfmYIner   - Platform inertia for yaw rotation about the platform CM (kg m^2)---------------------- BLADE ---------------------------------------------------         15   BldNodes    - Number of blade nodes (per blade) used for analysis (-)"Baseline_Blade.dat"    BldFile(1)  - Name of file containing properties for blade 1 (quoted string)"Baseline_Blade.dat"    BldFile(2)  - Name of file containing properties for blade 2 (quoted string)"Baseline_Blade.dat"    BldFile(3)  - Name of file containing properties for blade 3 (quoted string) [unused for 2 blades]---------------------- ROTOR-TEETER --------------------------------------------          0   TeetMod     - Rotor-teeter spring/damper model {0: none, 1: standard, 2: user-defined from routine UserTeet} (switch) [unused for 3 blades]          0   TeetDmpP    - Rotor-teeter damper position (degrees) [used only for 2 blades and when TeetMod=1]          0   TeetDmp     - Rotor-teeter damping constant (N-m/(rad/s)) [used only for 2 blades and when TeetMod=1]          0   TeetCDmp    - Rotor-teeter rate-independent Coulomb-damping moment (N-m) [used only for 2 blades and when TeetMod=1]          0   TeetSStP    - Rotor-teeter soft-stop position (degrees) [used only for 2 blades and when TeetMod=1]          0   TeetHStP    - Rotor-teeter hard-stop position (degrees) [used only for 2 blades and when TeetMod=1]          0   TeetSSSp    - Rotor-teeter soft-stop linear-spring constant (N-m/rad) [used only for 2 blades and when TeetMod=1]          0   TeetHSSp    - Rotor-teeter hard-stop linear-spring constant (N-m/rad) [used only for 2 blades and when TeetMod=1]---------------------- DRIVETRAIN ----------------------------------------------        100   GBoxEff     - Gearbox efficiency (%)     87.965   GBRatio     - Gearbox ratio (-)    5.6E+09   DTTorSpr    - Drivetrain torsional spring (N-m/rad)      1E+07   DTTorDmp    - Drivetrain torsional damper (N-m/(rad/s))---------------------- FURLING -------------------------------------------------False         Furling     - Read in additional model properties for furling turbine (flag) [must currently be FALSE)"unused"      FurlFile    - Name of file containing furling properties (quoted string) [unused when Furling=False]---------------------- TOWER ---------------------------------------------------         10   TwrNodes    - Number of tower nodes used for analysis (-)"Baseline_Tower.dat"    TwrFile     - Name of file containing tower properties (quoted string)---------------------- OUTPUT --------------------------------------------------True          SumPrint    - Print summary data to "<RootName>.sum" (flag)          1   OutFile     - Switch to determine where output will be placed: {1: in module output file only; 2: in glue code output file only; 3: both} (currently unused)True          TabDelim    - Use tab delimiters in text tabular output file? (flag) (currently unused)"ES10.3E2"    OutFmt      - Format used for text tabular output (except time).  Resulting field should be 10 characters. (quoted string) (currently unused)          0   TStart      - Time to begin tabular output (s) (currently unused)         10   DecFact     - Decimation factor for tabular output {1: output every time step} (-) (currently unused)          2   NTwGages    - Number of tower nodes that have strain gages for output [0 to 9] (-)          4,          7    TwrGagNd    - List of tower nodes that have strain gages [1 to TwrNodes] (-) [unused if NTwGages=0]          0   NBlGages    - Number of blade nodes that have strain gages for output [0 to 9] (-)          0   BldGagNd    - List of blade nodes that have strain gages [1 to BldNodes] (-) [unused if NBlGages=0]              OutList     - The next line(s) contains a list of output parameters.  See OutListParameters.xlsx for a listing of available output channels, (-)"RotSpeed"                - Tower-top / yaw bearing axial force"RotPwr"   END of input file (the word "END" must appear in the first 3 columns of this last OutList line)---------------------------------------------------------------------------------------`

AeroDyn:

Code: Select all

`------- AERODYN v15.03.* INPUT FILE ------------------------------------------------1.5 MW baseline aerodynamic parameters for FAST certification tests #11-#13.======  General Options  ============================================================================False         Echo               - Echo the input to "<rootname>.AD.ech"?  (flag)"default"     DTAero             - Time interval for aerodynamic calculations {or "default"} (s)          1   WakeMod            - Type of wake/induction model (switch) {0=none, 1=BEMT}          2   AFAeroMod          - Type of blade airfoil aerodynamics model (switch) {1=steady model, 2=Beddoes-Leishman unsteady model}          0   TwrPotent          - Type tower influence on wind based on potential flow around the tower (switch) {0=none, 1=baseline potential flow, 2=potential flow with Bak correction}False         TwrShadow          – Calculate tower influence on wind based on downstream tower shadow? (flag)False         TwrAero            - Calculate tower aerodynamic loads? (flag)False         FrozenWake         - Assume frozen wake during linearization? (flag) [used only when WakeMod=1 and when linearizing]======  Environmental Conditions  ===================================================================      1.225   AirDens            - Air density (kg/m^3) 1.4639E-05   KinVisc            - Kinematic air viscosity (m^2/s)        335   SpdSound           - Speed of sound (m/s)======  Blade-Element/Momentum Theory Options  ====================================================== [used only when WakeMod=1]          2   SkewMod            - Type of skewed-wake correction model (switch) {1=uncoupled, 2=Pitt/Peters, 3=coupled} [used only when WakeMod=1]True          TipLoss            - Use the Prandtl tip-loss model? (flag) [used only when WakeMod=1]True          HubLoss            - Use the Prandtl hub-loss model? (flag) [used only when WakeMod=1]true          TanInd             - Include tangential induction in BEMT calculations? (flag) [used only when WakeMod=1]False         AIDrag             - Include the drag term in the axial-induction calculation? (flag) [used only when WakeMod=1]False         TIDrag             - Include the drag term in the tangential-induction calculation? (flag) [used only when WakeMod=1 and TanInd=TRUE]"Default"     IndToler           - Convergence tolerance for BEMT nonlinear solve residual equation {or "default"} (-) [used only when WakeMod=1]        100   MaxIter            - Maximum number of iteration steps (-) [used only when WakeMod=1]======  Beddoes-Leishman Unsteady Airfoil Aerodynamics Options  ===================================== [used only when AFAeroMod=2]          3   UAMod              - Unsteady Aero Model Switch (switch) {1=Baseline model (Original), 2=Gonzalez’s variant (changes in Cn,Cc,Cm), 3=Minemma/Pierce variant (changes in Cc and Cm)} [used only when AFAeroMod=2]True          FLookup            - Flag to indicate whether a lookup for f' will be calculated (TRUE) or whether best-fit exponential equations will be used (FALSE); if FALSE S1-S4 must be provided in airfoil input files (flag) [used only when AFAeroMod=2]======  Airfoil Information =========================================================================          1   InCol_Alfa         - The column in the airfoil tables that contains the angle of attack (-)          2   InCol_Cl           - The column in the airfoil tables that contains the lift coefficient (-)          3   InCol_Cd           - The column in the airfoil tables that contains the drag coefficient (-)          0   InCol_Cm           - The column in the airfoil tables that contains the pitching-moment coefficient; use zero if there is no Cm column (-)          0   InCol_Cpmin        - The column in the airfoil tables that contains the Cpmin coefficient; use zero if there is no Cpmin column (-)          4   NumAFfiles         - Number of airfoil files used (-)"Airfoils/cylinder.dat"    AFNames            - Airfoil file names (NumAFfiles lines) (quoted strings)"Airfoils/s818_2703.dat""Airfoils/s825_2103.dat""Airfoils/s826_1603.dat"======  Rotor/Blade Properties  =====================================================================False         UseBlCm            - Include aerodynamic pitching moment in calculations?  (flag)"WP_Baseline_AeroDyn_blade.dat"    ADBlFile(1)        - Name of file containing distributed aerodynamic properties for Blade #1 (-)"WP_Baseline_AeroDyn_blade.dat"    ADBlFile(2)        - Name of file containing distributed aerodynamic properties for Blade #2 (-) [unused if NumBl < 2]"WP_Baseline_AeroDyn_blade.dat"    ADBlFile(3)        - Name of file containing distributed aerodynamic properties for Blade #3 (-) [unused if NumBl < 3]======  Tower Influence and Aerodynamics ============================================================= [used only when TwrPotent/=0, TwrShadow=True, or TwrAero=True]          2   NumTwrNds         - Number of tower nodes used in the analysis  (-) [used only when TwrPotent/=0, TwrShadow=True, or TwrAero=True]TwrElev        TwrDiam        TwrCd(m)              (m)           (-)0.0000000E+00  5.6200000E+00  0.0000000E+008.2390000E+01  2.8200000E+00  0.0000000E+00======  Outputs  ====================================================================================True          SumPrint            - Generate a summary file listing input options and interpolated properties to "<rootname>.AD.sum"?  (flag)          0   NBlOuts             - Number of blade node outputs [0 - 9] (-)          1,          8,         17    BlOutNd             - Blade nodes whose values will be output  (-)          0   NTwOuts             - Number of tower node outputs [0 - 9]  (-)          1,          2,          3,          4,          5    TwOutNd             - Tower nodes whose values will be output  (-)                   OutList             - The next line(s) contains a list of output parameters.  See OutListParameters.xlsx for a listing of available output channels, (-)"RtTSR""RtAeroCp""RtSpeed""RtAeroPwr"END of input file (the word "END" must appear in the first 3 columns of this last OutList line)---------------------------------------------------------------------------------------`

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 12:19 pm
Dear Babak,

Are these files the ones that give you the answer that you expect (correct Cp)? What do you change in these files to get the answer that you don't expect (low Cp)?

Best regards,

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 12:31 pm
Dear Jason,

In each of the turbines, I change the rotor speed according to the their optimal TSR value(which is 5.6 for 10kW and 7 for 1.5 MW) and different constant wind speeds.
I expect that the Cp to be equal to its maximum value but it is not.
For example in 10KW turbine (rotor radius = 2.9)
Optimal rotor speed for 10m/s wind speed is:
Rotor speed = (5.6*10)/2.9
But the obtained Cp value does not match with Cpmax (=0.42)

Kind regards,

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 12:48 pm
Dear Babak,

OK, so you say at 10 m/s and rotor speed = (5.6*10)/2.9 you get lower Cpmax than you expect. At what wind speed and corresponding rotor speed are you getting the Cpmax that you do expect?

Best regards,

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 1:00 pm
Dear Jason,

For every wind speed, if I calculate the rotor speed according to the optimal value of the TSR and setting the pitch angle to its optimal value, I expect that the Cp to be its maximum value, right?
So it does not depend on special wind speed. In other words, by for every wind speed by setting rotor speed to its optimal value according to the Optimal TSR, Cp should be maximum.
Maximum Cp value can be achieved for every wind speed if I set rotor speed to its value at MPP.

Kind regards,

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 2:59 pm
Dear Babak,

For every wind speed, if I calculate the rotor speed according to the optimal value of the TSR and setting the pitch angle to its optimal value, I expect that the Cp to be its maximum value, right?
So it does not depend on special wind speed. In other words, by for every wind speed by setting rotor speed to its optimal value according to the Optimal TSR, Cp should be maximum.
Maximum Cp value can not be for special wind speed.

Yes, I completely agree. But I thought that was the nature of your question. I thought were saying that when you used FAST to calculate Cpmax for the SWRT, you obtain Cpmax = 0.42 at TSR=5.6 by running a range of TSRs, but then when you run specifically at 10 m/s and the corresponding rotor speed for TSR=5.6, you no longer get Cpmax = 0.42. What am I missing? I no longer understand your question.

Best regards,

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 3:13 pm
Dear Jason,

My problem is exactly at this part as you said:
but then when you run specifically at 10 m/s and the corresponding rotor speed for TSR=5.6, you no longer get Cpmax = 0.42

Why this happens?

Kind regards,

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 3:23 pm
Dear Babak,

So, at what condition can you run FAST and get Cpmax = 0.42 and how does that condition differ from the simulation at 10 m/s and TSR = 5.6?

Best regards,

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 4:13 pm
Dear Jason,

That is my question.
I run FAST at constant wind speed and corresponding rotor speed for TSR= 5.6. I disable all DOFs. But why the Cp is not maximum considering that the rotor speed is set to its value at MPP?

Best regards,
Babak

### Re: Linearization issue using Fast V7.02

Posted: Fri May 29, 2020 5:41 pm
Dear Babak,

We seem to be going in circles and I'm not sure how to help. Do you have two distinct FAST models, where one predicts the answer you expect and the other does not? If so, what is different between these models?

Best regards,