Cell zone mesh failing

Using SimScale Fluid Flow / CFD
1

Hello everyone,

I am currently replicating a CFD simulation of a centrifugal pump using a different pump design while maintaining the same boundary conditions as the original simulation. My setup includes two solid bodies: a computational fluid (CP) domain and a solid body designated as the MRF (Multiple Reference Frame) rotating zone.

I have encountered an issue during the mesh generation process. When I add the MRF body as a cell zone within the mesh, the mesh generation fails. However, if I exclude the MRF body from the cell zone, the mesh is generated successfully. Unfortunately, omitting the cell zone causes the simulation to be recognized as a multi-region mesh, preventing the simulation from proceeding further.

Has anyone experienced a similar issue or have any suggestions on how to resolve this? Below is the link to the simulation setup; the second one is based on my CP design.

I appreciate any guidance or insights you can provide.

Best regards,

2

Hi @HamzaBaig, thanks for posting on the forum

Every time the “An error occurred” prompt appears, this is realted to some sort of bug since at least a more detailed description of the problem should be shown. We’ve already reported this to the dev team and they are looking into it.

However, if I can give some input of my own here, I see some odd features in your CAD. Take for instance this floating face right here:

image
image1920Ă—945 185 KB

Whereas the original geometry from the tutorial is very clean. Is there a way to get your geometry to be cleaner? I also see some sharp edges/small faces that could potentially get your model to not be meshed.

To be honest I’m not sure how the MRF algorith is integrated into the mesher but a combination of them two might be leading to the discretization failing due to these unwanted features.

Best,
Igor

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