Compatible input files for 10MW and 15MW reference turbines

21

Yes sir, I want to convert the 10MW blade and aerodyn files to aerodyn v13 so that I can run an equivalent model in the FAST v7 Seismic Module.

22

Dear @Kashyap.Subham,

To convert the blade data from AeroDyn v15 to v13, just keep in mind a few things:

  • In AeroDyn v15, you must have aerodynamic nodes at the root and tip of the blade and any number of nodes whereever you want them at local radii in between (BlSpn).
  • In AeroDyn v13, the blade is divided into a number (BldNodes) of elements (of length DRNodes) and each node must be placed at the center of those elements (RNodes). So, the sum of DRNodes must equal the total blade length (TipRad-HubRad) and RNodes can be calculated from DRNodes. (For example, RNodes(1) = HubRad+DRNodes(1)/2, RNodes(2) = RNodes(1) + (DRNodes(1)+DRNodes(2))/2, etc.)
  • You can interpolate AeroTwist and Chord from BlTwist and BlChord based on the locations of RNodes in AeroDyn v13 and BlSpn in AeroDyn v15.
  • Interpolating airfoil data is more difficult, so, I’d suggest just picking NFoil at each RNodes from BlAFID based on the the closest value of BlSpn.

Best regards,

23

Dear Sir,

Can aerodyn 15 be compiled with FAST v7 along with the seismic module?

Subham

24

Dear @Kashyap.Subham,

No. The interface for AeroDyn v15 follows the OpenFAST modularization framework, which is not supported by FAST v7. AeroDyn v15 is interfaceable to FAST v8 and OpenFAST.

Best regards,

25

I cant fairly understand where/how do I start the process of conversion of the aerodyn files for compatible files. Can you please assist for the same by giving me a starting points and a few checkpoints as well.

Subham

26

Dear @Kashyap.Subham,

I’m not aware of scripts that will convert AeroDyn v13 files from FAST v7 to the newest AeroDyn v15 version available in OpenFAST. However, there were MATLAB scripts available in the MATLAB Toolbox (GitHub - OpenFAST/matlab-toolbox: Collection of Matlab tools developed for use with OpenFAST) that converted AeroDyn v13 files from FAST v7 to AeroDyn v15 files from OpenFAST, as documented in the FAST v8 ReadMe file: https://openfast.readthedocs.io/en/main/_downloads/5f2ddf006568adc9b88d8118dc3f1732/FAST8_README.pdf. These scripts should help with the process, but you’ll have to update the scripts or change files manually to do the full conversion.

Best regards,