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by Jason.Jonkman
Tue Jul 14, 2009 11:09 am
Forum: Computer-Aided Engineering Software Tools
Topic: Compiling SFunction
Replies: 5
Views: 2579

RE: BladedA.DLL

Adam, The name of the FAST_SFunc shouldn't be a problem. But, I'm not sure I follow you. The FAST_SFunc is compiled as a .mexw32 file in MATLAB R2006a and newer. Is the DLL you are refering to the GH Bladed-style DLL controller or the FAST_SFunc.mexw32 file (which was compiled as a DLL in versions o...
by Jason.Jonkman
Tue Jul 14, 2009 10:33 am
Forum: Computer-Aided Engineering Software Tools
Topic: Compiling SFunction
Replies: 5
Views: 2579

RE: Compiling SFunction

Dear Adam,

Sorry, but I'm not sure what the compiling problem is. Does the "_BladedA" in the file names imply that you are trying to compile the FAST_SFunc with the Bladed-style DLL interface included?

Best regards,
by Jason.Jonkman
Tue Jun 16, 2009 5:29 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Propeller
Replies: 3
Views: 1983

RE: Propeller

Dear Lysander, I don't think forcing the axial induction to be positive by using a negative wind speed will give you the desired result. In a wind turbine code, like AeroDyn, the propeller state is modeled with a < 0. The wind turbine state is modeled with 0 < a < 0.5, the turbulent brake state is m...
by Jason.Jonkman
Mon Jun 15, 2009 5:40 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Propeller
Replies: 3
Views: 1983

RE: Propeller

Dear Lysander, If there is no flow passing through the rotor, than there can be no induction. When you set the wind speed to zero in AeroDyn, you are implying that there is no flow passing through the rotor. In your example--where the propeller spins in the abscence of wind or forward speed (e.g., a...
by Jason.Jonkman
Fri Jun 05, 2009 1:27 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Gforce error
Replies: 3
Views: 2070

RE: Gforce error

Dear Lysander, Power = Torque * Speed. So, you can calculate power in a REQUEST statement by meseaurring torque and speed and multiplying them together. This will give the mechanical power in the shaft. The electrical power will be less due to conversion effeciency losses. You must model these effec...
by Jason.Jonkman
Wed Jun 03, 2009 2:51 am
Forum: Computer-Aided Engineering Software Tools
Topic: Building Simulink Bladed-style DLL(.so) for linux?
Replies: 2
Views: 3192

RE: Linux shared library to replace control DLL.

Dear Orion, You are right, DLL files are useless in Linux. So if we want to use an external controller, a "discon.so" library has to be built. As Marshall pointed out, we don't support Linux at NREL. However, another user of FAST has sent me a version of the BladedDLLInterface.f90 that is ...
by Jason.Jonkman
Wed Jun 03, 2009 2:10 am
Forum: Computer-Aided Engineering Software Tools
Topic: FAST Pitch Controller with rate limits
Replies: 7
Views: 9447

RE: spd_trq.dat input file?

Dear Orion, The file spd_trq.dat is a data file that is read in from Kirk Pierce's UserVSCont() routine that is found in UserVSCont_KP.f90. There is a sample spd_trq.dat file found in FAST's CertTest folder. UserVSCont_KP.f90 is compiled in with the standard FAST executable that is found in the stan...
by Jason.Jonkman
Wed May 27, 2009 11:29 am
Forum: Computer-Aided Engineering Software Tools
Topic: Gforce error
Replies: 3
Views: 2070

RE: Gforce error

Dear Lysander, It looks like you did compile the AeroDyn and A2AD .f90 files correctly because these errors were generated while running ADAMS at runtime. So, I suspect you have an error in your ADAMS dataset. You made this dataset by hand, correct? Have you followed all of the requirements (naming ...
by Jason.Jonkman
Tue May 19, 2009 9:49 am
Forum: Computer-Aided Engineering Software Tools
Topic: Adams-Aerodyn Interface
Replies: 10
Views: 6434

RE: Adams-Aerodyn Interface

Dear Lysander, MSC.ADAMS 2008 requires the Intel Visual Fortran (IVF) compiler and no longer accepts the Compaq Visual Fortran (CVF) compiler. To date, we at NREL have been compiling FAST, AeroDyn, and A2AD (with MSC.ADAMS 2005R2) with the CVF compiler, but we plan to upgrade to the IVF compiler for...
by Jason.Jonkman
Mon May 18, 2009 4:46 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Adams-Aerodyn Interface
Replies: 10
Views: 6434

RE: Adams-Aerodyn Interface

Dear Lysander, The A2AD source code contains DOS command script called CompileLinkA2AD.bat. This script can be used to compile the AeroDyn and A2AD source files into a DLL and link them to ADAMS. The script works without modification for FAST-generated ADAMS models. But the script should be easily m...
by Jason.Jonkman
Mon May 18, 2009 1:06 pm
Forum: Computer-Aided Engineering Software Tools
Topic: GForce input :?:
Replies: 1
Views: 1672

RE: GForce input :?:

Dear Lysander, The statement GFORCE/*,...,FUNCTION=USER(*) described in the A2AD User's Guide is the statement that calls AeroDyn, through A2AD, for each element of each blade in your ADAMS model. As I said in the post found here: http://wind.nrel.gov/forum/wind/viewtopic.php?t=258, in order to run ...
by Jason.Jonkman
Mon May 18, 2009 12:52 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Adams-Aerodyn Interface
Replies: 10
Views: 6434

RE: Adams-Aerodyn Interface

Dear Lysander, The MSC forum should be your first source for asking ADAMS-specific questions. They probably can't help you with AeroDyn or A2AD, however. In my previous post I suggested the MSC forum because I wasn't sure what your problem was (i.e., if you had a problem with ADAMS or a problem with...
by Jason.Jonkman
Mon May 18, 2009 12:36 pm
Forum: Computer-Aided Engineering Software Tools
Topic: FAST-Simulink tranform
Replies: 8
Views: 7272

RE: Mex on mac osx

Adam, The FAST_SFunc.mexw32 only works on 32-bit Windows platforms (this is what the "w32" in the mex name stands for). This mex file will not work on a Mac OS X. I don't run a Mac myself, so, I can't help you out much. But the post found here: http://wind.nrel.gov/forum/wind/viewtopic.php...
by Jason.Jonkman
Fri May 15, 2009 12:18 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Adams-Aerodyn Interface
Replies: 10
Views: 6434

RE: Adams-Aerodyn Interface

Dear Lysander, It is hard to offer help without knowing your specific problem. Also, you should contact MSC Technical Support for ADAMS-specific questions. (We can only offer help on AeroDyn and A2AD.) How are you creating your ADAMS model of this teetering rotor?--By hand or with some ADAMS preproc...
by Jason.Jonkman
Wed May 13, 2009 9:56 am
Forum: Computer-Aided Engineering Software Tools
Topic: FAST-Simulink tranform
Replies: 8
Views: 7272

RE: Working Problems

Dear Adam, That error is from AeroDyn and is telling you that it cannot find any wind file with root name "84m_12mps" in the "Wind\WP_Baseline" directory. The wind file(s) to be used by AeroDyn, including a relative path to its(their) location, is input in AeroDyn's primary input...

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