Query regarding Mean wind speed in FF TurbSim file

Hello Everybody,

I am a PhD student working on coupling FAST with our in-house CFD code. I am thinking of writing the wind velocities from the CFD into a full-field TurbSim binary file which can be executed by FAST (Aerodyn) to provide the forces.
The mean wind speed at hub height (mffws) is a scalar in the FF file. Could you please confirm the use/purpose of this scalar?
My understanding is that it is used as a convection velocity for the planes (YZ) which have the u,v,w velocities.

Thank you.

Regards,

Anshul

Hi, Anshul.

Yes, the MFFWS value in the TurbSim binary files is used to propogate the 3-D turbulence box in time.

If it’s useful, I have some Fortran code that you can modify to generate TurbSim binary files (.wnd or .bts).

Dear Bonnie,

Thank you for your prompt response. That answers/clarifies things.
I might contact you in case I need further help/clarification.

Regards,

Anshul