Search found 3277 matches

by raback
Yesterday, 19:46
Forum: ElmerSolver
Topic: Charge relaxation problem
Replies: 3
Views: 62

Re: Charge relaxation problem

Hi All, I'm in the process of writing a new optimized version of StatCurrentSolver. At the same time I could augment it to be more complete. Hence I thought about adding this relaxation term. Here \sigma is electric conductivity and \eps is permittivity and the source term is given. NewStatCurrent.P...
by raback
12 Sep 2018, 19:43
Forum: ElmerSolver
Topic: Inductance extraction for parallel wires
Replies: 3
Views: 42

Re: Inductance extraction for parallel wires

Hi

For this particular case how about computing the inductance from the fact that the total energy is, E=LI^2/2. At least the CalcFields does automatically compute the energy.

-Peter
by raback
10 Sep 2018, 16:40
Forum: Contributed Cases
Topic: WhitneyAV 3D coupled current emag of a coil
Replies: 10
Views: 5058

Re: WhitneyAV 3D coupled current emag of a coil

Hi

Sometimes I remember that there was a problem with the very long runs (and the convergence plotter) when using GUI. Are you running the case using GUI? If yes, perhaps you could try using command line.

-Peter
by raback
04 Sep 2018, 20:28
Forum: ElmerSolver
Topic: Mortar - switch between strong and weak
Replies: 5
Views: 75

Re: Mortar - switch between strong and weak

Hi Thanx for testing. The many choices reflect the development history. The choice of projectors affects the linear system and hence we have kept all choices. It is even possible to do hybrid weak/strong projector. One thing: when we test the continuity over different pairs some of the conditions af...
by raback
03 Sep 2018, 22:35
Forum: Bug reports
Topic: Segmentation Fault when running radiation example
Replies: 2
Views: 88

Re: Segmentation Fault when running radiation example

Hi The problem is ViewFactors: error while loading shared libraries: libelmersolver.so: cannot open shared object file: No such file or directory ERROR:: systemc: Command exit status was 127 ERROR:: systemc: Unable to execute system command[ Possibly the ViewFactors executable is not in the path to ...
by raback
03 Sep 2018, 12:35
Forum: ElmerSolver
Topic: Mortar - switch between strong and weak
Replies: 5
Views: 75

Re: Mortar - switch between strong and weak

Hi You were right. The flags were not ideally comprised. They only had an effect of turning a requested weak to strong but not the opposite. The weak can be requested by "Galerkin Projector = True" but as it was not given all projectors were defaulted to be strong. There is now a branch "ProjectorFl...
by raback
02 Sep 2018, 22:12
Forum: ElmerSolver
Topic: Charge relaxation problem
Replies: 3
Views: 62

Re: Charge relaxation problem

Hi

As written before this would be just a few lines of code. We may be soon writing an optimized version of the StatCurrentSolver and could include that term in the process.

-Peter
by raback
02 Sep 2018, 22:10
Forum: ElmerSolver
Topic: Mortar - switch between strong and weak
Replies: 5
Views: 75

Re: Mortar - switch between strong and weak

Hi What kind of interface mesh do you have? For meshes that are extruded and hence consisting of edges in (x,y) plane and along z-axis it is possibe to flatten down the interface mesh plane such that the edges are cartesian. Then using simple geometric justification you can map vertical and horizont...
by raback
02 Sep 2018, 21:42
Forum: General
Topic: Elmer workflow for electrical machine designers
Replies: 14
Views: 7164

Re: Elmer workflow for electrical machine designers

Hi Matthias is right that for many of these there is no electrical machine -centric solution available but rather some generic routines in SaveScalars to integrate over stuff using different operators. With masks you can control where the integration takes place. That being said there are also more ...
by raback
02 Sep 2018, 21:26
Forum: ElmerSolver
Topic: Boundary condition changes in transient simulation
Replies: 2
Views: 59

Re: Boundary condition changes in transient simulation

Hi

My guess is that you have old .vtu files present and only partially overwrite them. Perhaps your previous test runs had different inlet velocity?

-Peter