[BKaiser]

Hello,

I am attempting to model a rotating wind turbine using the dynamic fluid body interaction (DFBI) solver in STAR CCM+. I've constrained the turbine (floating in the center of the control volume, no tower) to rotate about the axis it would in reality, set an initial rotational velocity, moments of inertia, ramp time, release time, etc. I have one region, with many surfaces, and DFBI turned on. My DFBI body is the turbine, which is also it's own surface within the region.

For some reason, the turbine surface still expects a specified rotation rate, even though I already specified an initial one in my DFBI body. Near the end of ramp time, the rotation was faster than the specified initial rotation, and the solver seemed to disregard the specified rotation rate for the surface. Did I do the simulation correctly, and if so, why does it ask for a specified rotation rate for the surface which it seems to not use?

Also, I had pictures out put from each time step and STAR appears to be rotating my entire mesh, not just the turbine. STAR crashes when I try to see the geometry, scalar, or mesh scenes.

Thanks in advance! I apologize for the long question.