Large mesh type influence on calculated field results
Hello together,
I am working on quite a simple model for the 3-D calculation of eddy current losses in permanent magnets. The field source is calculated in an external magnetostatic FEA program, is then mapped onto the Gmsh model and finally used for the 3-D field caclulation with GetDP. However, I have found that the calculation results (eddy current field, eddy current loss) vary greatly depending on the type of grid used. Only the tetrahedral mesh delivers the expected results. With a hexahedral mesh, the deviation is suspiciously large. With a triangular prism mesh, the deviation becomes much smaller, but is still remarkable. I have attached an example.
Kind regards, Max
Edited by Max Hullmann