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Can 3D geometry only simulate 1/4 of it?

Posted 23 giu 2016, 11:32 GMT-4 Geometry Version 5.2 3 Replies

Sandra Wang
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I have a geometry which in not asymmetry 2D, but symmetry in mirror. In order to reduce the computation power, may I only simulate 1/4 of it? Thank you for your attention!
3 Replies Last Post 25 giu 2016, 10:13 GMT-4
Daniel Connelly
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Posted: 8 years ago 24 giu 2016, 13:14 GMT-4
Yes -- these are standard reflective boundary conditions. However, it won't work for solutions which allow for antisymmetric solutions, like eigenmode analysis or Schrödinger's Equation. You'd only solve for 1/4 of the available solutions.
Yes -- these are standard reflective boundary conditions. However, it won't work for solutions which allow for antisymmetric solutions, like eigenmode analysis or Schrödinger's Equation. You'd only solve for 1/4 of the available solutions.
Jeff Hiller COMSOL Employee

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Posted: 8 years ago 24 giu 2016, 14:02 GMT-4
There are ways of handling even antisymmetric solutions.
For a solid discussion of this, see www.comsol.com/support/knowledgebase/1038/
Best,
Jeff
There are ways of handling even antisymmetric solutions. For a solid discussion of this, see https://www.comsol.com/support/knowledgebase/1038/ Best, Jeff
Daniel Connelly
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Posted: 8 years ago 25 giu 2016, 10:13 GMT-4
Thanks for posting that! So to calculate the number of modes you'd need all combinations of symmetric and antisymmetric boundaries (2ⁿ, where n is the number of boundaries), unless certain combinations are degenerate.

This still wouldn't work with "pie-slice" examples like the one on that web page, though.
Thanks for posting that! So to calculate the number of modes you'd need all combinations of symmetric and antisymmetric boundaries (2ⁿ, where n is the number of boundaries), unless certain combinations are degenerate. This still wouldn't work with "pie-slice" examples like the one on that web page, though.

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