Search found 4826 matches

by raback
04 Apr 2024, 15:47
Forum: ElmerSolver
Topic: Steady state convergence tolerance
Replies: 5
Views: 84

Re: Steady state convergence tolerance

Hi Roland, The convergence criterion is |u_i - u_j| < c*(|u_i|+|u_j|)/2, where c is the tolerance. For nonlinear system j refers to previous nonlinear iterate. For coupled system j refers to the solution of the previous time the coupled system visited the solver. Generally it may be a good idea that...
by raback
03 Apr 2024, 02:38
Forum: ElmerSolver
Topic: How to get H20 and H27?
Replies: 15
Views: 212

Re: How to get H20 and H27?

Hi 827 has probably not been used as much as 820. The ordering of the 20 nodes is the same, then then 6 face nodes are ordered in the order of the faces, and the last index is given for the center node. Also 409 is different from 408 just by the last center node. I think 827 in the logic requires so...
by raback
03 Apr 2024, 02:14
Forum: ElmerSolver
Topic: Solver connections question
Replies: 6
Views: 131

Re: Solver connections question

Maybe you could be more specific what you want to compute. Devil lies in the detail. -Peter
by raback
30 Mar 2024, 12:37
Forum: ElmerSolver
Topic: ResultOuputSolver question
Replies: 3
Views: 77

Re: ResultOuputSolver question

Additionally if you decleare variables you may use, for example:

Code: Select all

Exported Variable 1 = -nooutput dummy
-Peter
by raback
27 Mar 2024, 16:32
Forum: General
Topic: Elmer as a replacement for Ansys HFSS in superconducting quantum circuits
Replies: 1
Views: 72

Re: Elmer as a replacement for Ansys HFSS in superconducting quantum circuits

Hi Most transient models can also solve eigenmode problems. These are consistency tests for EM waves with two different formulations: elmeruser@elmer-VirtualBox:~/Source/elmerfem/fem/tests$ grep -i 'eigen anal' -r | grep wave EMWaveBoxHexasEigen/emwave.sif: Eigen Analysis = True mgdyn_wave_eigen/cas...
by raback
27 Mar 2024, 16:23
Forum: ElmerSolver
Topic: Free-Free Beam Eigenvalue Test
Replies: 11
Views: 184

Re: Free-Free Beam Eigenvalue Test

Hi Just a note on something that could be confusing: If ResultOutputSolver (the one writing vtu files) is given the keywords "Eigen Analysis = Logical True" the numbering will reflect eigenvalues. Otherwise it will reflect timesteps (or steady state iteration steps) and specific naming sch...
by raback
26 Mar 2024, 13:07
Forum: Contributed Cases
Topic: Electric field analysis: high voltage transformer bushing
Replies: 2
Views: 107

Re: Electric field analysis: high voltage transformer bushing

Hi

Paraview has been broken by automated update of "expat" library on some platforms. Really annoying.
viewtopic.php?t=8259

-Peter
by raback
25 Mar 2024, 11:29
Forum: Installation & compilation
Topic: Elmer WSL Debian 12 with Elmer Virtual Machine Scripts
Replies: 4
Views: 201

Re: Elmer WSL Debian 12 with Elmer Virtual Machine Scripts

Hi Masahiro,

Really great work you have done to bring Elmer into the Windows Subsystem! With the detailed instructions I'm sure many people will try this out.

-Peter
by raback
25 Mar 2024, 11:25
Forum: Installation & compilation
Topic: Building Elmer for Nixpkgs fails
Replies: 3
Views: 98

Re: Building Elmer for Nixpkgs fails

Hi

Rather use the "devel" branch and let's see the complaints anew then.

-Peter
by raback
20 Mar 2024, 19:54
Forum: External tools
Topic: Gmsh: extrusion help
Replies: 3
Views: 85

Re: Gmsh: extrusion help

Hi

Maybe you only save physical entities. Ask Gmsh to "save all".

-Peter