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Andoni Garcia

Check an Specific Mesh

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I'm trying some meshing techniques for some simulations, and I would like to know how it is the best way to mesh a face / Volume / Region / ...

 

I suppose that depending the meshing quantity, I'll get different results.

And also, the best meshing way for the user depends on applying the less meshing point quantity, for the most precise result. Saying in other words, if I add more points in the meshing tool, the result will not change.

 

Correct me if I'm wrong please, but is it true that the check mesh checks the precision of the mesh in all the system? Including Aided & Relaxation mesh areas.

And how would be the way to check the mesh of an specific face, volume, region, line... without drawing upon the solver?

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Hello Andoni,

This is not an easy topic, depending on the geometry, the meshing process could be quite complex.

You will find attached a ".pdf" explaining the meshing process in Flux. I think it will answer most of your questions.

“Check mesh” option will verify mesh quality all over the geometry, including relaxation, shadowing and aided mesh. Meshing process also allows to identify bad quality elements, this information may help you to detect poorly meshed areas.

Best regards.

4_Mesh-Altair_Flux.pdf

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On 1/27/2020 at 10:20 AM, Alejandro Rodríguez said:

Hello Andoni,

 

 

This is not an easy topic, depending on the geometry, the meshing process could be quite complex.

 

 

You will find attached a ".pdf" explaining the meshing process in Flux. I think it will answer most of your questions.

 

 

“Check mesh” option will verify mesh quality all over the geometry, including relaxation, shadowing and aided mesh. Meshing process also allows to identify bad quality elements, this information may help you to detect poorly meshed areas.

 

 

Best regards.

 

 

4_Mesh-Altair_Flux.pdf 4.28 MB · 1 download

 

And why does this happen?

I've applied the same mesh to the same geometry with 10 times smaller depth, so I don't think that it's due to the overmeshing...

 

01.png

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Hi Andoni,

This problem appears because your parallelepiped has a mapped or extruded meshing, which is quite fine, while the infinity box around it has much more rough mesh.

A better mesh in the box may help. Anyway, it depends on your specific mesh and the options you have chosen. You can also try to follow one of the two meshing strategies proposed in the document I have sent you.

If you want further help you should send me your project, in this way I could propose you more specific solutions.

Best regards.

Alejandro Rodríguez

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