[pharley]

I am creating a model based on a centrifugal compressor. I have generated the geometry using BladeGen, and the mesh using TurboGrid. It is a single passage model so has periodics.

I have an INblock, a main blade Passage, and an OUTblock. The complete passage was meshed in TurboGrid so 1:1 connectivity exists between all blocks. I also have 1:1 on the periodics.

I import this to CFX-Pre using the Turbo mode function and create a stationary domain for the INblock, a rotating domain for the Passage, and a stationary domain for the OUTblock, and frozen rotor interfaces between them. The periodics are set up automatically.

When checking the interface mesh connections between the INblock and Passage, and the Passage and OUTblock, I find that the Mesh Connection is GGI. When I select the drop down list there are no other options.

I manually added connectivity at the interfaces, and it does not complain about the 1:1 here, but I still cannot select it as a mesh connection. I glued the meshes together, still cannot select 1:1.

I tried to make all three domains rotate and select 'None' as the interfaces and use the alternative rotation model for the stationary domains.

Am I missing something obvious here? Is it possible to have a 1:1 mesh connection with a frozen rotor interface?

I have started the simulation in Solver to check and it is definitely only recognising a GGI.

Peter