Mesh on a cylinder that specifies the numbers of elements longitudinally and cross sectionally
Posted 2024年4月11日 GMT+2 09:329 Replies
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How to mesh a cylinder that specifies the numbers of elements longitudinally and cross sectionally? Swept seems to work for longitudinal elements.
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Hi Carl,
I'm not an expert on meshing, but I think you can do it by specifying a custom mesh size along the edges for the bottom circular boundary and then sweep based on that mesh with another custom mesh size for the longitudal sweep direction. That should give you control of the swept mesh in both directions.
Best regards,
Magnus
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Hi Magnus, Thank you so much. How to specify a custom mesh size along the edges for the bottom circular boundary is what I wonder!
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Hi Carl,
Use anEdgemesh generator fromMesh>More Generators>Edgeand apply it to the bottom circumferential edges. Then add aSizesubnode and chooseCustomunderElement Sizeso that you can set a fixed mesh element size underElement Size Parameters.
Best regards,
Magnus
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Hi Magnus, Thank you so much. I followed your advice but found that Edge 1 and swept 1 don't play well together. I specify first the mesh density to be extremely fine in Edge 1, then specify the element numbers swept 1, the latter overthrowing the former.
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Hi Carl,
This approach works well for me in version 6.2. I suggest that you contact COMSOL Support for any specific issues that you may have with your model.
Best regards,
Magnus
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Hi Magnus, Thank you. I can't see your cross sectional meshing clearly enough. Isn't it axisymmetric?
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Hi Carl,
The mesh nodes are evenly distributed along the base (and top) perimeter, and by default, the bottom surface uses a quadrilateral mesh, and the cylinder is swept meshed with hexahedron mesh elements. If desired, you can instead use a triangular mesh on the botton surface; the swept mesh for the cylinder then uses prism mesh elements.
Best regards,
Magnus
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Hi Magnus thank you. I followed your advice as attached. The only weakness for me is that on the circular boundary the mesh is too biased. Is it possible to build one that is not so biased in the two perpendicular directions?
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Hi Carl,
I guess it's a matter of designing a suitable face mesh on the bottom boundary. I'm not sure that I can assist with further advice here. Please contact the COMSOL Support team if you have additional questions.
Best regards,
Magnus
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