Question about using TMD in nacelle

Wind & Water Computer-Aided Engineering Software Tools
9

Dear Akheel,

“YawBrFxt, YawBrFyt, and YawBrFzt” are not valid outputs from the ElastoDyn module; check again. The complete list of available outputs from OpenFAST is documented here: openfast.readthedocs.io/en/mast … eters.xlsx. Simply add the outputs you want in the OutList section of each module.

Here are my answers to your questions:

  1. Setting both CompNTMD and CompTTMD to True will enable both a nacelle and tower TMD. Each TMD should have a corresponding TMD input file.
  2. An FFT is not the same as a PSD, although you can derive a PSD via FFT, e.g., as I provided in the MATLAB script Jason_PSD.m in the following forum topic: User defined spectrum from routine UserWaveSpctrm in HydroDYn - #7 by Jason.Jonkman.
  3. I’m not really sure I know enough about what you are asking to comment.

Best regards,