[rosaesposito]

Hallo to everyone.
I am solving one case with the electromagnetic features, and the simulation clerly diverges due to one error in the mesh that I don't manage to find.
I am aware that with electromagnatic feature parameteres like the Volume Change are quite important, and I tried to have one uniform mesh.
Unfortunately, I have to reduce the numebr of nodes somewhere, in order to not have some kind of 10000000 nodes simulation.
My question is: if I manage to change something in the output parameter in PRE, can I detect the point of the mesh who gives me problems, and so to try to change the mesh with one purposefully strategy?
I can upload the file somewhere, every help is welcome.

[Timon]

Output the equation residuals and look up where the maximum residual occurs. This will give you an idea of the source of your (mesh-related) convergence issues.

[rosaesposito]

Thanks a lot. I did it.
The mesh is something like 5000000 nodes and I need some time for the results.
My problem is: the simulation is good, till something goes wrong and the in some part of the mesh the Temperature jumps to high (not acceptable) values, and then diverges.
So, if I understood good, is it enough to look whare the residual have some high values, and there I find the problem?

[Timon]

Basically yes. It at least gives you an idea at which location the solver breaks down. If you find bad element-quality in this area then convergence might be helped by improving the mesh locally. Otherwise, try reducing your timestep...