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Structured mesh on an internal face between two volume bodies possible?

Hi at all,

is it possible, to create a structured mesh on an internal face between two volume bodies (for example in a divided tube)?

The goal is, to ensure that the volume elements are laying at the same position in an structured order. This could help me, to compare the CoV (Coefficient of Variation) across multiple Eulerian Multiphase models.

Thanks in advance for any answer.

Regards, Oliver

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HyperMesh CFD

v2022.3

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acupro

Is this intended for Altair AcuSolve as the solver - or some other solver?

Can you provide an example (even a sketch) of how you would like the mesh to look on that internal face?

Oliver_21465

Yes, I'm using AcuSolve.

I attached two pictures as examples. The type of the mesh is less important than the reproducibility.

acupro

Yes, I'm using AcuSolve.

I attached two pictures as examples. The type of the mesh is less important than the reproducibility.

You can probably get something like the left side by explicitly meshing that surface separately and changing the type to quads. But then when you create the volume mesh and other surface mesh - the boundary layer mesh will change that. The right side is the typical mesh from HyperMesh CFD or SimLab by default.

Oliver_21465

It is definitely okay, when I get a mesh like the one on the right side.

But how can I ensure to get the same mesh across different versions of a model. I want to ensure, that the nodes and elements of the volume mesh are at the same position for evaluation purposes.

acupro

It is definitely okay, when I get a mesh like the one on the right side.

But how can I ensure to get the same mesh across different versions of a model. I want to ensure, that the nodes and elements of the volume mesh are at the same position for evaluation purposes.

You may be able to save just that internal surface mesh as a separate mesh file, then import that as you change other things, so it's always the same. It's not a standard practice - but may be possible. What do you intend to change in the 'different versions of a model'? If you're changing geometry near this internal surface, locking the mesh may cause issues.

Oliver_21465

You may be able to save just that internal surface mesh as a separate mesh file, then import that as you change other things, so it's always the same. It's not a standard practice - but may be possible. What do you intend to change in the 'different versions of a model'? If you're changing geometry near this internal surface, locking the mesh may cause issues.

The modifications are far enough from the internal face, so this sounds like a good practice for me.

I will give it a try and give feedback! Thank you!

acupro

The modifications are far enough from the internal face, so this sounds like a good practice for me.

I will give it a try and give feedback! Thank you!

Which pre-processor are you using - SimLab? or HyperMesh CFD? You do need to make sure the final mesh is still all connected. I'm interested to see your process to get that all to work.