Translating mesh interface in cfx11.0 ?

Sam

Hi folks:

I am trying to solve a 2d transient rotor-stator problem using cfx 11.0. My geometry consists of 1 vane passage matched to 4 rotor passages. There is a time dependent gust specified at the vane inlet â€" i.e. the unsteadiness is not just due to rotor motion.

The simple way to set this up is to specify a constant y velocity to the rotor mesh and have a sliding mesh interface between the vane and the rotor meshes. In brief, this is a 2d cascade simulation, but with a moving rotor mesh. I have already done this simulation using another cfd code and it works fine.

In cfx, there are 2 problems: 1)grids have to be 3d. This can be handled by extruding a 2d mesh into 3 planes. 2)Under transient rotor-stator in the cfx manual it says:

"Translational relative motion is not supported at a transient sliding interface (only rotational motion is supported)."

Does that mean that this problem is essentially not doable in cfx11.0 ? Or is there another way?

Thanks for your help.

Sam