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I am trying to simulate am axial fan with MRF. I have only two solids, one of them acting as Rotating Zone.
I get no error with the mesh, but when I try to simulate I get the error of Multi-Region with CFD simulation.
I am using one region for the “fluid”:
and the other for the MRF:
I don’t what can be the problem…
This is the linl to the project:
Hey Robert, and thanks for using the forum!
Can you please try running your simulation with the Standard mesh algorithm?
Thank you for the answer
I tried. It worked, but the simulation diverged, and I suspect that is because the quality of the mesh os very low. I was trying with the hex-dominant, which usually makes better meshes for CFD.
Probably the problem is the same as in this post:
@Ricardopg, I have set up my simulation here - Rotating Body | SimScale Workbench.
Initially, I had issues with my mesh so I changed the mesh algorithm from Standard to Hex-dominant based off of what other users had mentioned in the forum. Having done that, when I try to run the simulation, I get the error, “A multi-region mesh was assigned - this analysis-type requires a single-region mesh.” I am pretty sure this is because I’m doing something wrong with the rotating zone, but I can’t seem …
I am testing it.
I think the solution is to create a cell zone for the rotating region. Please do so by creating a mesh refinement, and setup similar to this:
Of course, set up the appropriate lengths.
In the Standard mesher, the cell zones are created automatically, but in the hex mesh you need to create it manually.