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OpenFAST / openfast

Main repository for the NREL-supported OpenFAST whole-turbine and FAST.Farm wind farm simulation codes.
http://openfast.readthedocs.io
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Error when trying to run FAST.Farm #2502

Open j-killeen opened 1 day ago

j-killeen commented 1 day ago

Dear @jjonkman

I hope this message finds you well. I'm using the .fstf file from the TSinflow folder to set up an offshore wind farm. From my understanding, the .fstf file originally contains two onshore wind turbines and I'm basically trying to replace those onshore wind turbines with floating offshore turbines. When I run the simulation I get the following error:

"Farm_Initialize:Farm_ValidateInput:OutFmt produces a column width of 10 instead of 20 characters. Farm_Initialize:For efficiency, NumPlanes has been reduced to the number of time steps (31). Farm_Initialize:T2:Farm_InitFAST:FWrap_Init:FAST_InitializeAll:FAST_Init:FAST_ReadPrimaryFile:1/VT K_fps is not an integer multiple of DT. FAST will output VTK information at 16 fps, the closest rate possible. FAST_InitializeAll:HydroDyn_Init:WAMIT_Init: Not every frequency component in ".../5MW_Baseline/HydroData/Spar.3" contains the same listing of direction angles. Check for errors in the WAMIT output file."

The error is telling me that not every frequency component in the Spar.3 file contains the same listing of direction angles and that I should check the WAMIT output file for errors. I didn't change anything in the Spar.3 file nor did I use WAMIT. I would greatly appreciate any advice or guidance on how to fix this issue. Thank you.

jjonkman commented 1 day ago

Dear @j-killeen,

Presumably you are using the OpenFAST model of the NREL 5-MW baseline wind turbine atop the OC3-Hywind spar, available from the OpenFAST r-test: https://github.com/OpenFAST/r-test/tree/main/glue-codes/openfast/5MW_OC3Spar_DLL_WTurb_WavesIrr. Did you change this OpenFAST model in some way?

Best regards,

j-killeen commented 1 day ago

@jjonkman I actually duplicated the 5MW_OC3Spar_Linear fst file and used them in place of the FFTest_WT1 and FFTest_WT2 fst files. When I run the simulation, I get that error mentioned above.

jjonkman commented 20 hours ago

Dear @j-killeen,

The 5MW_OC3Spar_Linear model in the OpenFAST r-test (https://github.com/OpenFAST/r-test/tree/main/glue-codes/openfast/5MW_OC3Spar_Linear) does not make use of WAMIT Spar.3 data (its HydroDyn input file uses ExctnMod = 0). Can you try using the 5MW_OC3Spar_DLL_WTurb_WavesIrr model I linked to in my prior post instead?

Best regards,