[opm]

Hi,

I try to setup a simple 2D sliding mesh problem (see appended picture of the mesh) with Workbench and fail at properly creating the interface between the rotating and stationary parts. I already searched through the documentation, this forum and the internet for the last two days and didn't find a solution. Maybe I just fail to recognize what the problem really is. So here is what I did so far:

• I created a geometry in Catia consisting of two circular rotating areas with "blade-dummies" and a rectangular stationary area.
• I formed a new part out of the three surface bodies in DM ("Form New Part" command) to get a conformal mesh.
• I named all the boundaries and fluid zones. That's the step where I assume my problem starts. I tried to created interface-"Named Selections" for both surface edges at the connection between the stationary and the rotating part. Ansys than throws an error at me "The mesh file exporter does not support overlapping geometry in named selections. ..."
• If I just leave it that way, start Fluent, setup the problem and start the calculation, the mesh degenerates after a while and I get negative cell volumes (see the two appended figures, before and after the calculation).
• I tried to make a wall Named Selection and rename it to interior in Fluent like it is described in the "Multiple Rotating Reference Frame" tutorial but had the same results.

Does anyone know how to properly setup the problem in WB DM and Meshing to be able to use the "Mesh Interface" dialog in Fluent?

Thank you in advance.
opm