Thank you! Now, do you have a Mesh interface between the rotor (fluid cylinder) and stator (Option 1) ? Or does the cylinder and stator share a conformal mesh (Option 2)?
For Option 1: you can add the cylindrical fluid zone with the same Rigid body motion as your turbine. Just set the 6DOF option to Passive. This will rotate both the fluid cell zone with the turbine together and will avoid having to remesh the cylindrical fluid zone to accomodate the turbine motion.
For Option 2: you should only need to assign Rigid body motion to the turbine walls. Just make sure you have the Remeshing option turned On with Unified Remeshing.
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