[fxzf]

Dear Foam experts,

I need to simulate a fan system. Geometry is not complicated, there is a axial fan in a channel, and a stator behind. This is illustrated in att.

Because I only need to simulate steady state, so I can only use the MRF in the rotor stage. But due to the stator behind, I need to use a mixing plane after rotor and before the stator. Now, the issue is I see there is no mixing plane in OpenFOAM plus version.

I know foam-ext has a mixing plane, but due to my most work is done in OpenFOAM plus, I cannot really move to use foam-ext unfortunately. I checked foam-ext code, mixing plane is much more complicated than my expected. There is also a mixingPlaneLduInterface.H in the code to somehow direct manipulate the matrix. I don't really understand it all in short time.

Because my geometry is quite simple, it is not aero-engine compressor which complicate AMI, transform needed. I can simulate the full fan geometry. So I wonder if it is possible to make a very simple mixing plane model in OpenFOAM plus. For example, could I use the Fan Cpt Jump boundary condition as reference, where I use master side to get flow from MRF stage, then calculate the mixing and put it into stator stage?

Thanks very much for the help.

[fxzf]

Anyone could give me some suggestions? Thanks.