Elmer Discussion Forum

Another result: I have now tried all possible combinations. Simulated testcase is a surface PM machine without magnetization (magnets behave like iron). If I include the rotor air between the magnets in the respective calculations (Torque Group, Component), the results are almost identical. That als...

I think that I found my mistake. I assumed that Mesh Rotate 3 works with the increment of the rotation and doesn't need the absolute angle. Some examples are with tx and others define the line with tx(0) - tx(1). Body Force 1 Mesh Rotate 3 = Variable Time Real MATC "tx" End instead of Body...

Hi, after using many open source and commercial electromagnetic solvers, my opinion is that the best programs have the best documentation or simple GUI. Regardless of the performance. From my point of view, you can see that from the fact that many refer to femm, which is good entry-level software. E...

Hello Martin, maybe the example is not so simple after all. Even with small increments there is a small offset, which means that the error is not that big in the end. It still bothers me because I can't explain it. The small error margin of your lossless machine is impressive. Especially because I c...

I can confirm, that there is no big difference between Arkkio and the nodal force method. My observation is more, that i have a shift in the mean of the torque which differ from zero, when i reduce the step size of the mesh rotation. A denser mesh doesn't bring any improvement. I know that the torqu...

Thanks for your work! I tested also some variants (with gmsh). Some comments on your approach: The mesh with the larger number of bodies should be used first for -unite so that the second mesh will completely renumbered to save the order The approach with the Physical Surface just work for the first...

After some try and error I had the same idea, but it produce unfortunately an incomprehensible result when I try this ElmerGrid 2 2 mesh_pm_rotor -in mesh_pm_stator -2d -unite -autoclean -out mesh_pm Results in ! ----- names for bodies ----- $ RotorIron = 1 $ RotorAir = 2 $ RotorAirgap = 3 $ Magnet1...

Hello Everyone, I have two mesh files, which I want to unite with ElmerGrid: .\gmsh model_stator_pmsm_type1_out.geo -2 -o mesh_pm_stator.msh ElmerGrid 14 2 mesh_pm_stator.msh -2d -autoclean .\gmsh model_rotor_pmsm_type1_out.geo -2 -o mesh_pm_rotor.msh ElmerGrid 14 2 mesh_pm_rotor.msh -2d -autoclean ...

Dear All, the following definition can be found in several test cases: Equation 1 Active Solvers(2) = 2 3 End Solver 1 is the Procedure = "RigidMeshMapper" "RigidMeshMapper" for rotation, Solver 2 and 3 for solving the relevant equation and Solver 4 is Procedure = "SaveData&...