Visualize full-field Turbsim data and anemometer equivalent wind speed

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Babak.Gavgani
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Joined: Sat Mar 14, 2020 12:03 pm
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Location: Belgium

Re: Visualize full-field Turbsim data and anemometer equivalent wind speed

Postby Babak.Gavgani » Mon Apr 27, 2020 3:43 pm

Dear Jason,

Thanks for your help. Now, I have obtained the following graphs for each of the wind speed components, as below ( shown only for u component)
u.JPG
u.JPG (46.66 KiB) Viewed 300 times

Please met me know how I can have plots as below?
I appreciate for your helps.
winds.JPG
winds.JPG (37.43 KiB) Viewed 300 times

Jason.Jonkman
Posts: 4933
Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
Contact:

Re: Visualize full-field Turbsim data and anemometer equivalent wind speed

Postby Jason.Jonkman » Mon Apr 27, 2020 4:36 pm

Dear Babak,

It looks like you already generated the image on the left (although your TurbSim grid is much coarser than the image from the TurbSim documentation). The image on the right is the same, but without any turbulence.

Best regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov

Babak.Gavgani
Posts: 29
Joined: Sat Mar 14, 2020 12:03 pm
Organization: ---
Location: Belgium

Re: Visualize full-field Turbsim data and anemometer equivalent wind speed

Postby Babak.Gavgani » Mon Apr 27, 2020 5:06 pm

Dear Jason,

Thanks for your reply.
Do you mean NumGrid_Z and NumGrid_Y ? or other parameters needs to modified?
Here I have attached my Tubsim input file.
Thanks for your time.

Code: Select all

TurbSim Input File. Valid for TurbSim v1.06.00, 21-Sep-2012

---------Runtime Options-----------------------------------
2318573             RandSeed1       - First random seed  (-2147483648 to 2147483647)
RanLux              RandSeed2       - Second random seed (-2147483648 to 2147483647) for intrinsic pRNG, or an alternative pRNG: "RanLux" or "RNSNLW"
False               WrBHHTP         - Output hub-height turbulence parameters in binary form?  (Generates RootName.bin)
False               WrFHHTP         - Output hub-height turbulence parameters in formatted form?  (Generates RootName.dat)
False               WrADHH          - Output hub-height time-series data in AeroDyn form?  (Generates RootName.hh)
True                WrADFF          - Output full-field time-series data in TurbSim/AeroDyn form? (Generates Rootname.bts)
False               WrBLFF          - Output full-field time-series data in BLADED/AeroDyn form?  (Generates RootName.wnd)
False               WrADTWR         - Output tower time-series data? (Generates RootName.twr)
False               WrFMTFF         - Output full-field time-series data in formatted (readable) form?  (Generates RootName.u, RootName.v, RootName.w)
False               WrACT           - Output coherent turbulence time steps in AeroDyn form? (Generates RootName.cts)
True                Clockwise       - Clockwise rotation looking downwind? (used only for full-field binary files - not necessary for AeroDyn)
 0                  ScaleIEC        - Scale IEC turbulence models to exact target standard deviation? [0=no additional scaling; 1=use hub scale uniformly; 2=use individual scales]
 
--------Turbine/Model Specifications-----------------------
5                   NumGrid_Z       - Vertical grid-point matrix dimension
5                   NumGrid_Y       - Horizontal grid-point matrix dimension
0.05                TimeStep        - Time step [seconds]
600                 AnalysisTime    - Length of analysis time series [seconds] (program will add time if necessary: AnalysisTime = MAX(AnalysisTime, UsableTime+GridWidth/MeanHHWS) )
100                 UsableTime      - Usable length of output time series [seconds] (program will add GridWidth/MeanHHWS seconds)
34.6189             HubHt           - Hub height [m] (should be > 0.5*GridHeight)
8                   GridHeight      - Grid height [m]
8                   GridWidth       - Grid width [m] (should be >= 2*(RotorRadius+ShaftLength))
0                   VFlowAng        - Vertical mean flow (uptilt) angle [degrees]
0                   HFlowAng        - Horizontal mean flow (skew) angle [degrees]
 
--------Meteorological Boundary Conditions-------------------
"IECKAI"            TurbModel       - Turbulence model ("IECKAI"=Kaimal, "IECVKM"=von Karman, "GP_LLJ", "NWTCUP", "SMOOTH", "WF_UPW", "WF_07D", "WF_14D", "TIDAL", or "NONE")
"1-ED3"             IECstandard     - Number of IEC 61400-x standard (x=1,2, or 3 with optional 61400-1 edition number (i.e. "1-Ed2") )
"C"                 IECturbc        - IEC turbulence characteristic ("A", "B", "C" or the turbulence intensity in percent) ("KHTEST" option with NWTCUP model, not used for other models)
"NTM"               IEC_WindType    - IEC turbulence type ("NTM"=normal, "xETM"=extreme turbulence, "xEWM1"=extreme 1-year wind, "xEWM50"=extreme 50-year wind, where x=wind turbine class 1, 2, or 3)
default             ETMc            - IEC Extreme Turbulence Model "c" parameter [m/s]
default             WindProfileType - Wind profile type ("JET";"LOG"=logarithmic;"PL"=power law;"H2L"=Log law for TIDAL spectral model;"IEC"=PL on rotor disk, LOG elsewhere; or "default")
34.6189             RefHt           - Height of the reference wind speed [m]
7                   URef            - Mean (total) wind speed at the reference height [m/s] (or "default" for JET wind profile)
default             ZJetMax         - Jet height [m] (used only for JET wind profile, valid 70-490 m)
default             PLExp           - Power law exponent [-] (or "default")           
default             Z0              - Surface roughness length [m] (or "default")

--------Non-IEC Meteorological Boundary Conditions------------
default             Latitude        - Site latitude [degrees] (or "default")
0.05                RICH_NO         - Gradient Richardson number
default             UStar           - Friction or shear velocity [m/s] (or "default")
default             ZI              - Mixing layer depth [m] (or "default")
default             PC_UW           - Hub mean u'w' Reynolds stress (or "default")
default             PC_UV           - Hub mean u'v' Reynolds stress (or "default")
default             PC_VW           - Hub mean v'w' Reynolds stress (or "default")
default             IncDec1         - u-component coherence parameters (e.g. "10.0  0.3e-3" in quotes) (or "default")
default             IncDec2         - v-component coherence parameters (e.g. "10.0  0.3e-3" in quotes) (or "default")
default             IncDec3         - w-component coherence parameters (e.g. "10.0  0.3e-3" in quotes) (or "default")
default             CohExp          - Coherence exponent (or "default")

--------Coherent Turbulence Scaling Parameters-------------------
"C:\users\bmehdiza\Desktop\coh-events\EventData"  CTEventPath     - Name of the path where event data files are located
"Random"            CTEventFile     - Type of event files ("LES", "DNS", or "RANDOM")
true                Randomize       - Randomize the disturbance scale and locations? (true/false)
 1.0                DistScl         - Disturbance scale (ratio of wave height to rotor disk). (Ignored when Randomize = true.)
 0.5                CTLy            - Fractional location of tower centerline from right (looking downwind) to left side of the dataset. (Ignored when Randomize = true.)
 0.5                CTLz            - Fractional location of hub height from the bottom of the dataset. (Ignored when Randomize = true.)
30.0                CTStartTime     - Minimum start time for coherent structures in RootName.cts [seconds]

==================================================
NOTE: Do not add or remove any lines in this file!
==================================================

Jason.Jonkman
Posts: 4933
Joined: Thu Nov 03, 2005 4:38 pm
Location: Boulder, CO
Contact:

Re: Visualize full-field Turbsim data and anemometer equivalent wind speed

Postby Jason.Jonkman » Mon Apr 27, 2020 5:12 pm

Dear Babak,

Yes, NumbGrid_Y and NumGrid_Z. Normally you'd want to set these so that spatial increment (dY and dZ):

Code: Select all

dY = GridWidth/(NumGrid_Y-1)
dZ = GridHeight/(NumGrid_Z-1)

are roughly equal to maximum chordlength of the rotor blade.

Bets regards,
Jason Jonkman, Ph.D.
Senior Engineer | National Wind Technology Center (NWTC)

National Renewable Energy Laboratory (NREL)
15013 Denver West Parkway | Golden, CO 80401
+1 (303) 384 – 7026 | Fax: +1 (303) 384 – 6901
nwtc.nrel.gov


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