[siw]

Hi,

I need to simulate a horizontal axis rotating vane but its angular speed unknown and is due to the known freestream velocity. In addition, I want to model the vane rotation as it accelerates from rest until it reaches a steady rotation.

Since the angular speed is unknown that rules out using a rotating domain. Also I don't see an immersed solid working suitably because that does not capture the vane's boundary layer. Finally, there is the rigid body solver, but again it seems that the rotational speed must be defined. I had planned that the rigid body solver could rotate the vane due to the forces on it and cylindrical volume of mesh encapsulating the vane would rotate inside a large stationary mesh via GGI, therefore not needing remeshing. But again I don't see CFX allowing this option.

Does anyone know how to model a rotating body of undefined angular speed?

Thanks