Elmer Discussion Forum

Boundary Condition 8 and 9 (in the case_3d.sif) must have a purpose. If I deactivate them the obtained results of torque and flux density are not plausible. Please see the figures below. zoom_in_Torqueplot_Comparison_BC_8and9_deactivated_in_blue_vs_activated_in_orange.png Bfield.png I greatly apprec...

Adding the following lines to Solver 3 (MagnetoDynamicsCalcFields) solves the issue with 2D. Solver 3 [...] Linear System Solver = Direct Linear System Direct Method = umfpack End This is interesting because the .sifs utilizing LUA, (i.e case_coarse_opt.sif and case_2.5d.sif) do not seem to require ...

Thank you for your message! I did a fresh download of the elmer-elmag repository but still get the same error. The case.sif which I use is this one: $ WM = 2*pi*1500/60 ! Mechanical Frequency [rad/s] $ PP = 2 ! Pole pairs $ H_PM = 920000 ! Magnetization at 20 deg C [A/m] $ Is = 4.2425*35*sqrt(2) ! S...

Hi everyone, I am trying to run the examples provided here: https://github.com/ElmerCSC/elmer-elmag/tree/main/PermanentMagnetMachine2D I get the following errors trying to run case.sif ELMER SOLVER (v 9.0) STARTED AT: 2024/05/10 10:35:09 ParCommInit: Initialize #PEs: 1 MAIN: MAIN: ==================...

I was searching for an explanation of the Galerkin Projector in the Elmersolver-Manual. Unfortunately it is not mentioned there. But searching the Forum led to some success and valuable insights ;) The source-post of the quote below can be found here: http://www.elmerfem.org/forum/viewtopic.php?p=17...

Hi Kevin, Thank you very much! Could you please explain why it must be the Anti Rotational Projector? As I understood so far, the Anti is used when you want to project the solution multiplied by -1. As this is the full model and no symmetry projectors are used how does this led to the solution? Is t...

Hi everyone, I run in the following Error while trying to conduct the simulation. ELMER SOLVER (v 9.0) STARTED AT: 2024/05/03 12:58:04 ParCommInit: Initialize #PEs: 1 MAIN: MAIN: ============================================================= MAIN: ElmerSolver finite element software, Welcome! MAIN: T...

Here are all the motormodels:

Hi, I implemented the full-model, the half-model using periodic BC and the quarter-model using anti-periodic BC of a 4-pole motor. No load is applied. See the overview of the models below. overview_motormodels.png To simulate the torque I used the component approach. The deviations of the cogging to...

I would be very thankful if somebody could have a look at my case and answer my three questions in the post above.