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Different results even with rotational symmetry

Posted 15 févr. 2022, 05:31 UTC−5 Wave Optics, Parameters, Variables, & Functions, Results & Visualization 2 Replies

mercy kingsta
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Hello, I have constructed a 2D geometry (4 circles arranged in each corner of a square) with rotational symmetry for every 90 deg (i.e. rotation of the object 45 deg or -45 deg will give identical structures). But when I evaluate it in wave optics (using expressions defined in variables), for 45 deg rotation and -45 deg rotation I get totally different results eventhough the objects look exactly same. I have used rotate in geometry - operations. Logically both the results should be same.

Can anyone suggest procedures to solve this problem?

Thanks

2 Replies Last Post 15 févr. 2022, 11:16 UTC−5
Robert Koslover Certified Consultant
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Posted: 3 years ago 15 févr. 2022, 10:48 UTC−5

I suggest you take a close look at your mesh and boundary conditions for both cases. I'm guessing that either or both changed (but that you didn't notice) when you modified the geometry. Keep looking and you'll find what went wrong.

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Scientific Applications & Research Associates (SARA) Inc.
www.comsol.com/partners-consultants/certified-consultants/sara
I suggest you take a close look at your mesh and boundary conditions for both cases. I'm guessing that either or both changed (but that you didn't notice) when you modified the geometry. Keep looking and you'll find what went wrong.
Jeff Hiller COMSOL Employee

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Posted: 3 years ago 15 févr. 2022, 11:16 UTC−5

Another place to look is material properties, if not isotropic.

Jeff

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Jeff Hiller
Another place to look is material properties, if not isotropic. Jeff

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