Search found 551 matches

by Bonnie.Jonkman
Thu May 23, 2019 6:43 am
Forum: Inflow Turbulence
Topic: intermittent FF wind field with TurbSim
Replies: 7
Views: 84

Re: intermittent FF wind field with TurbSim

Your TIMESR input is rotated 180 from the mean wind direction. The mean u component should almost always be positive, but you've defined them to all be negative in your input file. TurbSim's output is actually equivalent to your input file, though. It uses the convenction that u is positive in the m...
by Bonnie.Jonkman
Wed May 15, 2019 9:00 pm
Forum: Inflow Turbulence
Topic: intermittent FF wind field with TurbSim
Replies: 7
Views: 84

Re: intermittent FF wind field with TurbSim

Anup,

Is the wind direction at the hub 0 degrees? You should be able to see this in the TurbSim summary file.

If it is 0, I would not expect any difference in the wind time series output, including the sign.
by Bonnie.Jonkman
Mon May 13, 2019 2:34 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Sending RtAeroPwr via ServoDyn to Bladed-Style DLL Controller
Replies: 1
Views: 25

Re: Sending RtAeroPwr via ServoDyn to Bladed-Style DLL Controller

Hi, Paul. I don't see anything in your code that would be problematic. I suspect that the code isn't linking with the new compiled version of the FAST_types.f90 files, which is what causes the access violations. (I have had this problem before, myself. I am not sure if this is a Visual Studio proble...
by Bonnie.Jonkman
Wed May 08, 2019 9:13 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Instructions for Compiling FAST
Replies: 198
Views: 104200

Re: Instructions for Compiling FAST

Juan, You need to tell the compiler to preprocess the source file. With gfortran, you add the "-cpp" option to the build command that you used (on Intel Fortran, you use '-fpp'): gfortran -cpp -c -fPIC DISCONChanges.f90 In these particular source files, though, the preprocessor directives ...
by Bonnie.Jonkman
Wed May 08, 2019 9:02 pm
Forum: Inflow Turbulence
Topic: intermittent FF wind field with TurbSim
Replies: 7
Views: 84

Re: intermittent FF wind field with TurbSim

Hi Anup, You should get exactly the same time series output at the single point that you input; I would assume that you set that point to be at the hub. If you are not getting that output, check the time-series input file to make sure your measurement point is exactly on a grid point and that it's r...
by Bonnie.Jonkman
Wed Apr 24, 2019 8:55 pm
Forum: Inflow Turbulence
Topic: nComp=2 in TurbSim
Replies: 2
Views: 109

Re: nComp=2 in TurbSim

Hi, Jan. I think this bug has been fixed in the latest version of OpenFAST (https://github.com/openfast/openfast). It might be in the master branch, but I'm pretty certain it was merged into the dev branch. Let me know if that doesn't fix the problem. When you set nComp to 2, though, it just sets w ...
by Bonnie.Jonkman
Mon Nov 05, 2018 9:26 am
Forum: Computer-Aided Engineering Software Tools
Topic: FAST v8.16.00 on MAC OS v10.12.6
Replies: 3
Views: 838

Re: FAST v8.16.00 on MAC OS v10.12.6

That should be the only line you have to change. Your $(BIN_DIR) is set to ../bin at the top of that makefile, so I would set MAP_lib = /usr/lib/libmap-1.20.10.dylib or if you changed it to have a .so extension, you would use MAP_lib = /usr/lib/libmap-1.20.10.so I don't think the file extension that...
by Bonnie.Jonkman
Sun Nov 04, 2018 10:06 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Wind profile in a stable atmosphere
Replies: 1
Views: 2066

Re: Wind profile in a stable atmosphere

Hi, Astrid. There is a single stability parameter, RICH_NO, for each TurbSim simulation. Stability could, of course, vary with height, but that was not what was implemented in the code. You'd have to ask Neil Kelley, who originally pulled together the theory for TurbSim (and its predecessor codes), ...
by Bonnie.Jonkman
Sun Nov 04, 2018 8:35 pm
Forum: Computer-Aided Engineering Software Tools
Topic: FAST v8.16.00 on MAC OS v10.12.6
Replies: 3
Views: 838

Re: FAST v8.16.00 on MAC OS v10.12.6

gfortran: error: ../bin/libmap-1.20.10.so: No such file or directory This error message indicates that it is looking for a file called ../bin/libmap-1.20.10.so ; however you seem to have named that file /usr/lib/libmap-1.20.10.dylib . You should be able to either copy your file to the location the ...
by Bonnie.Jonkman
Mon Oct 15, 2018 9:15 am
Forum: Computer-Aided Engineering Software Tools
Topic: OpenFAST recompile problem
Replies: 5
Views: 1417

Re: OpenFAST recompile problem

Ruiliang, I think this issue is related to https://github.com/OpenFAST/openfast/issues/152. You can get the error about not finding a label in {openfast}\vs-build\RunRegistry.bat if it does not contain Windows line endings. GitHub or git may have converted this file to use linux or mac line endings ...
by Bonnie.Jonkman
Tue Aug 07, 2018 1:10 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Instructions for Compiling FAST
Replies: 198
Views: 104200

Re: Instructions for Compiling FAST

Zahir, The first errors about InflowWind's UniformWind submodule might be due to something wrong in the auto-generated IfW_UniformWind_Types.f90 file. If you add a space in the IfW_UniformWind.txt file, it should regenerate that file. (If that doesn't work, you could probably grab this file , but I'...
by Bonnie.Jonkman
Thu Apr 12, 2018 2:38 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Problem with Bladed style DLL (FAST 8.16 with AD15 and Bladed 4.3)
Replies: 11
Views: 2125

Re: Problem with Bladed style DLL (FAST 8.16 with AD15 and Bladed 4.3)

Array bounds checking won't necessarily help with the Bladed-style DLL. The arrays between FAST/Bladed and the controller DLL pass an address, so the compiler isn't going to be able to provide bounds checking that way. The aeroelastic code that calls the Bladed DLL indicates how long the array is al...
by Bonnie.Jonkman
Thu Apr 12, 2018 2:15 pm
Forum: Computer-Aided Engineering Software Tools
Topic: problem with Using Fast V8 by microsoft visual studio c/c++ 2013
Replies: 5
Views: 1348

Re: problem with Using Fast V8 by microsoft visual studio c/c++ 2013

Hi Xiaomin,

There should be a Visual Studio project in the FAST8 archive for compiling the FAST library. Please read the instructions in the FAST8 ReadMe (see page 54) for help in compiling with it.
by Bonnie.Jonkman
Tue Apr 10, 2018 12:51 pm
Forum: Computer-Aided Engineering Software Tools
Topic: problem with Using Fast V8 by microsoft visual studio c/c++ 2013
Replies: 5
Views: 1348

Re: problem with Using Fast V8 by microsoft visual studio c/c++ 2013

Hi, Xioming. The pre-compiled FAST Library was really designed to be used with Simulink, which is why it is linking with Matlab libraries. If you aren't going to be using this in Matlab, you can compile with the SysIVF.f90 file instead of SysMatlab.f90 and then remove the Matlab libraries from the l...
by Bonnie.Jonkman
Mon Feb 12, 2018 8:33 pm
Forum: Computer-Aided Engineering Software Tools
Topic: Stand-alone BeamDyn - How to input multiple point loads?
Replies: 5
Views: 1510

Re: Stand-alone BeamDyn - How to input multiple point loads?

Envision Energy modified the BeamDyn driver to allow multi-point loading. When our code for this was merged into the OpenFAST repository, we did not include documentation, which appears to be the cause of most of the confusion here. The multi-point loads are specified at the end of the APPLIED FORCE...

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