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Bug report in inflow wind openfast develop #618
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This model (BAR design) with the wind file generating the error is attached |
@ptrbortolotti: When I tried to download the zip file you attached, my computer tells me it contains a virus or malware, so I can't actually check the model. (Perhaps a controller is included inside the zip file?) I see only the AeroDyn output channel here, so I am wondering what checks have you done to say that this is caused by the linear vertical shear in InflowWind's uniform wind file and not something in AeroDyn or ServoDyn (or elsewhere). |
Thanks Bonnie for the support here. I'm running some more tests and I will upload new files. I had turned off servodyn, so that's out of the game, but now I do see changes in the outputs varying the aerodyn15 flags. I'll get back to you as soon as I have isolated the problem better. Thank you! |
Hello OpenFAST team, I've zipped the model again removing anything that is not a .dat file and a .wnd file. |
I don't see a uniform wind file in that zip. There is a binary turbsim file (BAR01_3ETM_U4.000000_Seed1.0.bts), but nothing matching the format for the Uniform Wind file (WindType 2). |
that is surprising.. the folder should have two subfolders: "bar0" with the openfast model and "wind" with a .wnd file, which I attach here after changing the extension to .txt |
Thanks for the file. I'm not sure why it isn't in the zip (3 posts above). Could you try adding another column of zeros at right side of the table? I wonder if we have a parsing error when only 8 columns are present instead of the expected 9 (the code in theory should handle this ok, but might have a bug). |
I checked the
Are the values for linear vertical shear sensible? It is set to 1.000724 with an additional PL exponent of 0.2. |
Was this a problem in the master branch (or whatever branch you were using)? i.e., is this a new issue? Or could this be related to something in BEM that is triggered because of the shear you are adding? I haven't looked in great detail, but one thing that sticks out to me is the |
Thank you Bonnie, it looks like the reference length is not setup correctly in WEIS! I'll keep this issue open for a little longer, but most likely the error is on our side then! |
hello openfast team, thank you for the great support. Bonnie was right, RefLength wasn't initially correctly in WEIS and it was left at a dummy value of 1 meter. This PR is fixing things on our side (together with some other changes) thanks again, I'm happy to close this issue now |
Bug description
Inflow wind on the develop branch suffers when .wnd files are loaded with a linear vertical shear (DLC 1.5)
To Reproduce
Steps to reproduce the behavior:
Expected behavior
Screenshots, if applicable
OpenFAST Version
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