Search found 40 matches

by lazyTom
06 Jul 2017, 02:34
Forum: ElmerSolver
Topic: problem with mortar periodic BC
Replies: 8
Views: 3632

Re: problem with mortar periodic BC

Hi Peter, to further avoid problems with mesh complexity I have prepared a very simple model yet representative of a real world system (KISS rule ;) ). Consider the system shown in the picture below (NB: clicking the picture will expand it, just found it, but maybe I'm the only one that didn't know ...
by lazyTom
18 Jun 2017, 13:50
Forum: ElmerSolver
Topic: problem with mortar periodic BC
Replies: 8
Views: 3632

Re: problem with mortar periodic BC

Good morning Peter, " ...However, even after that there seems to be something beyond the mortar FEs making your system hard to converge... " - bad luck?!? :D About your comment of convergence without Mortar BC. If you mean using pure simmetry conditions instead of mortar than I can confirm that the ...
by lazyTom
17 Jun 2017, 19:55
Forum: ElmerSolver
Topic: problem with mortar periodic BC
Replies: 8
Views: 3632

Re: problem with mortar periodic BC

Hi Peter, About the minor tips, I have tried all of them but it didn't help. Though my questions reamin still open, I have tried Mortar BC Additive (True/False) but again no resuts. After that, I have prepared a new mesh that uses an unstructured mesh for the volume and a structured 2D mesh on Morta...
by lazyTom
02 Jun 2017, 01:37
Forum: ElmerSolver
Topic: problem with mortar periodic BC
Replies: 8
Views: 3632

Re: problem with mortar periodic BC

Hi Peter, Glad to hear that you see 3D electromagnetics as a promising field ^^ By the way, I assume you are aware of the article "Electromagnetic transient finite element 3D modelling of electrical machines using open-source tools"? Ive found it in this post: http://www.elmerfem.org/forum/viewtopic...
by lazyTom
01 Jun 2017, 01:05
Forum: ElmerSolver
Topic: problem with mortar periodic BC
Replies: 8
Views: 3632

Re: problem with mortar periodic BC

Hi all, ok, I think I spotted my first error. Also, I have prepared a simpler model and added more details on what I want to do, I hope this will give more chances to get to the bottom of the problem. By the way, I have available data from a real motor design. I think this is a great opportunity to ...
by lazyTom
13 May 2017, 19:20
Forum: ElmerSolver
Topic: problem with mortar periodic BC
Replies: 8
Views: 3632

problem with mortar periodic BC

Hi all, I'm trying to solve for the magnetic field in a 3D electric motor using mortar BCs but I can't make the solver converge. Please find below the details of the model. This is an overview of the mesh, you can see the motor model with the energised coil (it is immersed in air) and the simmetry p...
by lazyTom
09 May 2017, 15:16
Forum: ElmerSolver
Topic: resistance and power dissipation from StatCurrentSolver
Replies: 4
Views: 1827

Re: resistance and power dissipation from StatCurrentSolver

I suspected that :).

I believe this explains all the possible options available for working with these variables.

Cheers,

Marco
by lazyTom
09 May 2017, 01:21
Forum: ElmerSolver
Topic: resistance and power dissipation from StatCurrentSolver
Replies: 4
Views: 1827

Re: resistance and power dissipation from StatCurrentSolver

Hi Matthias, thanks a lot, the solver works ^^ Solver 3 !Exec Solver = After Timestep Equation = SaveScalars Procedure = "SaveData" "SaveScalars" Filename = "coil characteristics.dat" End If anybody is intereseted, the solver produces two files: 1. coil characteristics.dat.names (this is the file th...
by lazyTom
07 May 2017, 02:30
Forum: ElmerSolver
Topic: resistance and power dissipation from StatCurrentSolver
Replies: 4
Views: 1827

resistance and power dissipation from StatCurrentSolver

Hi all, Recently I've been working with the StatCurrentSolver and I've found that when you use "Current Control" (current fixed at Ic) the solver outputs the dissipated power as a function of the potential inposed on BC insead of power dissipated by Ic. In my simulation (see results below) I've set ...
by lazyTom
16 Jan 2017, 02:02
Forum: General
Topic: RotatingBCMagnetoDynamicsGeneric test failed
Replies: 3
Views: 2316

Re: RotatingBCMagnetoDynamicsGeneric test failed

Hi all, Just a quick update on the skew feature, it took me some time staring at the MATC equation but eventually the penny dropped (tx(0) and tx(1) are always devious to interprete XD). By the way, it works in degrees. It's a very nice feature! Still working on the boundaries identification questio...