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.