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MEF simulation not converging

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Hello,
I am simulation the electric and magnetic field using MEF of some coils at 1MHz. This is a frequency domain study but for some reason, the iterative solver never converges and approaches the relative tolerance before shooing up again. (it uses GMRES, I have also tried FGMRES
When is set the relative tolerance to .001, looking at the convergence plot gets down to an error of ~.01 before restarting endlessly. I change the relative tolerance to .1, and then the convergence plot only reaches .5 or so.

What is be best way to achieve convergence? I have tried changing the mesh multiple times, but that makes no difference.


1 Reply Last Post Sep 16, 2016, 7:54 a.m. EDT
Sergei Yushanov Certified Consultant

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Posted: 8 years ago Sep 16, 2016, 7:54 a.m. EDT
Loic,

Did you try to set non-zero conductivity of air and add Gauge Fixing for A-Field

Regards,
Sergei
Loic, Did you try to set non-zero conductivity of air and add Gauge Fixing for A-Field Regards, Sergei

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