Reference turbines for scaling

Wind & Water
4

Hi Karthik,

This is a common activity for us. With WISDEM, we actually have an example prepped around rescaling a reference turbine to a new rating or dimension. The example rescales the 15-MW reference turbine to 20MW. For your problem at hand, I would suggest:

  1. Start with the IEA 3.4-MW reference turbine found here.
  2. Save a new geometry-yaml file at the new rating, rotor diameter, hub height, etc. that you know already
  3. Reoptimize the blade and tower. The 15-MW example does this all in one step, but you can do it in two steps (blade then tower) if you want to step gingerly.
  4. You can likely skip any re-optimization of the drivetrain as the 3.4-MW design is likely close enough to want to need
  5. Once you have the new geometry-yaml input file for your optimized 4-MW design, you can then use WEIS to generate OpenFAST input files and start your more detailed loads analysis. If you haven’t been exposed to WEIS before, it is an amalgamation of WISDEM and OpenFAST (and a handful of other NREL tools too).

Good luck!
Garrett

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