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How to maintain symmetry with modesolver?
Posted Apr 20, 2010, 5:13 p.m. EDT Geometry, Mesh 3 Replies
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Through use of the RF module (2D Perpendicular-Hybrid-waves-Eigensolver mode) I am modeling a dual-waveguide which posesses symmetric and antisymmetric modes. However, when using comsol, I am finding even and odd modes which are asymmetric. In reality the eigenmodes are known to be perfectly symmetric/antisymmetric. I suspect that this is a result of meshing. Does anyone know how to:
1) Create perfectly symmetric meshes.
2) Create symmetry planes to force even or odd modes.
Any assistance is greatly appreciated.
-p
1) Create perfectly symmetric meshes.
2) Create symmetry planes to force even or odd modes.
Any assistance is greatly appreciated.
-p
3 Replies Last Post Nov 2, 2015, 1:54 p.m. EST
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Posted:
1 decade ago
Hi
I have also been asking COMSOl to add a "mirror mesh" functionality, I have some issues in structural, pls ask them directly a as an improvement suggestion, the more we are the more chances that it get a "high priority status", the developpers are rather good to include such demands when thzey are correctly justified.
I mostly "split my geometry with interiour boundaries where I have symmetry planes, even cutting up larger parts into smaller ones and then emsh parts, and use the "copy mesh" on edgs and boundaries before I mesh the finl volume, this improves the symmetry
Hope this helps on the way
Ivar
I have also been asking COMSOl to add a "mirror mesh" functionality, I have some issues in structural, pls ask them directly a as an improvement suggestion, the more we are the more chances that it get a "high priority status", the developpers are rather good to include such demands when thzey are correctly justified.
I mostly "split my geometry with interiour boundaries where I have symmetry planes, even cutting up larger parts into smaller ones and then emsh parts, and use the "copy mesh" on edgs and boundaries before I mesh the finl volume, this improves the symmetry
Hope this helps on the way
Ivar
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Posted:
9 years ago
Hey Ivar
I read a lot of your discussions about symmetrical meshing. Do you know if they already built a "mirror mesh" operation? I only found "Copy Domain" and "Copy" in the mesh subnotes. But these two operations do not really solve the problem for mirroring a mesh.
Do you know anything new? Or do you still work with splitting the geometry and "copy mesh" on edges, etc...?
Best regards,
Christian
I read a lot of your discussions about symmetrical meshing. Do you know if they already built a "mirror mesh" operation? I only found "Copy Domain" and "Copy" in the mesh subnotes. But these two operations do not really solve the problem for mirroring a mesh.
Do you know anything new? Or do you still work with splitting the geometry and "copy mesh" on edges, etc...?
Best regards,
Christian
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Posted:
9 years ago
Hi
Normally if your part is symmetric the "copy mesh" will automatically detect this and make a symmetric copy hence you get your mirror operation, but I'm not sure if it's capable of a central symmetric mesh operation.
Try it out with a "sand case/toy-model"
--
Good luck
Ivar
Normally if your part is symmetric the "copy mesh" will automatically detect this and make a symmetric copy hence you get your mirror operation, but I'm not sure if it's capable of a central symmetric mesh operation.
Try it out with a "sand case/toy-model"
--
Good luck
Ivar
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