Elmer Discussion Forum

Peter, I checked the sif to see if elemental fields were being used for the postprocessing. Although I explicitly deselected "skip elemental fields", and selected "skip nodal fields" in the GUI , the sif file did not reflect those requests. I have since manually added your sugges...

The convergence behavior of the MgDynPost solver is a little puzzling. MgHarm converges nicely for the problem run; Then MgDynPost calculates the variables of interest. The issue here is that the attached "convergence history" plot shows that MgDynPost hasn't converged to the requested 1e-...

Peter, Thank you very much for the clear explanation. I should have realized the constraint imposed by the edge elements. A-V solvers are new to me. My past experience is mostly with E-V solvers.

For a magnetodynamics harmonic problem, is it possible to employ an infinite element domain at the outer boundary? I have run into an issue with assigning an outer boundary condition that results in fields reasonably close to what is expected from a boundary at infinity. For example, consider the s...

For what frequency are you running the simulation? At DC the current in the plates is zero and the electric field between plates is the same as with perfect conductors. For a sinusoidal steady-state solution, the displacement current between plates results in a voltage drop in the plates and the ele...

Peter, Thank you for your reply. The problem with using equivalent flux density BC's is not a serious issue for me. For now I will stick with defining boundary conditions with the magnetic vector potential. It is just that I like to look at problems from different perspectives for consistency. This ...

Kevin, Thank you for your quick reply.

I notice that multiple instances of certain material properties occur in the sif file. In the snippet shown below, "Relative Permeability" occurs 4 times in both "Copper" (material 1) and "Air" (material 2) sections. "Relative Permittivity" occurs 2 times in t...

Per the "AxialField" boundary condition used in Tutorial 7, the components of the magnetic vector potential transverse to the axis of the wire are set to zero (Ax=0, Ay=0) on the exterior surfaces of the dielectric. This is equivalent to setting the component of the magnetic flux density i...

I exported the real and imaginary current density data from a paraview line plot to a csv for careful examination. Moving across the region of interest, the exported numerical data shows a reversal in lead-lag between the real and imaginary components of the current density; the line plot does not s...