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NaN or Inf found when solving linear system using SOR

Posted 6 nov 2014, 12:37 GMT-5 RF & Microwave Engineering Version 4.4 0 Replies

Qiancheng Zhao
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Hi COMSOL colleague,

I had a problem in simulating trench waveguide. The structure is attached.

I tried boundary mode analysis, and it works well. But if I perform the frequency domain computation, it always gives an error.
"NaN or Inf found when solving linear system using SOR".

I searched in the COMSOL Forum and found some suggestions like changing mesh etc. However, they didn't work.

May I know if there is a way to fix the problem? I really appreciate your help.

Thanks,

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0 Replies Last Post 6 nov 2014, 12:37 GMT-5
COMSOL Moderator

Hello Qiancheng Zhao

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