Rotating Region Geometric Considerations

The Autodesk Simulation CFD rotating machinery capability analyzes rotating devices using a locally rotating frame of reference. This region completely surrounds a rotating object, and is called the rotating region.

Areas in the model that are not rotating are analyzed in a static (absolute) frame of reference. These regions are called static regions. (Fluid in a static region can move, but the volume itself does not.)

The following are geometric considerations for setting up rotating analyses:

The following graphics illustrate these principals: