Dear Colleagues,
I sincerely hope you are all doing fine. Could you be so kind to advise me on the following issue, please?
The problem I have is quite an ordinary induction current problem in 3D with a stranded conductor of almost zero conductivity. I have managed to get a great solution with COMSOL, while enforcing the gauge fixing and using the direct solver. But when I am changing the solver to iterative one (due to fine mesh for example), I am not able to get a solution anymore, even with the Vanka preconditioner -- it keeps saying me that there are zeros on the diagonal of a submatrix needed for the SSOR update in the Vanka algorithm. Could you be so kind to help me with it, please?
Thank you very very much for your help, and have a beautiful day!
With best wishes,
Dima
I sincerely hope you are all doing fine. Could you be so kind to advise me on the following issue, please?
The problem I have is quite an ordinary induction current problem in 3D with a stranded conductor of almost zero conductivity. I have managed to get a great solution with COMSOL, while enforcing the gauge fixing and using the direct solver. But when I am changing the solver to iterative one (due to fine mesh for example), I am not able to get a solution anymore, even with the Vanka preconditioner -- it keeps saying me that there are zeros on the diagonal of a submatrix needed for the SSOR update in the Vanka algorithm. Could you be so kind to help me with it, please?
Thank you very very much for your help, and have a beautiful day!
With best wishes,
Dima