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Segregated? Or Fully coupled?

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Hi, all,

I am trying to simulate S-parameters of my structure in RF module and I choose frequency domain. When I use segregated solver, there are always errors:

Failed to find a solution.
Maximum numbers of segregated iterations reached.
Returned solution is not converged.

Errors insist even after I increase maximum numbers of segregated iterations.
Then I use Fully coupled solver to simulate and there is no error. But I am not sure whether the results are correct or not. So if I have more than one variables in my model, is it a necessity to use segregated solver?

Thanks a lot for any help.


2 Replies Last Post 08.02.2016, 15:10 GMT-5

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Posted: 8 years ago 08.02.2016, 14:49 GMT-5
Hi Tianjing,

Having the same problem with the electric + acoustic module...

Did you find a solution to the problem? How do you choose segregated or fully coupled models?

Best regards
Hi Tianjing, Having the same problem with the electric + acoustic module... Did you find a solution to the problem? How do you choose segregated or fully coupled models? Best regards

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Posted: 8 years ago 08.02.2016, 15:10 GMT-5
Hi, Tobias,

For my case, when I compute in different frequency range (low frequency), this error will disappear. Then I try to compare the results with segregated and fully coupled solver in low frequency and find they are identical. So I just use fully coupled solver to simulate my structure in a wide frequency range. I am not sure if it's right.

Maybe you can try to change maximum numbers of segregated iterations or tolerance factor to remove errors.

Good luck.
Hi, Tobias, For my case, when I compute in different frequency range (low frequency), this error will disappear. Then I try to compare the results with segregated and fully coupled solver in low frequency and find they are identical. So I just use fully coupled solver to simulate my structure in a wide frequency range. I am not sure if it's right. Maybe you can try to change maximum numbers of segregated iterations or tolerance factor to remove errors. Good luck.

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