Search found 3576 matches

by raback
Today, 18:47
Forum: General
Topic: Magnetic field induced by current in a cylindrical wire
Replies: 9
Views: 49

Re: Magnetic field induced by current in a cylindrical wire

Hi

Is the the integral or local value of the Joule heating that you report for Elmer? What if multiplied by volume?

-Peter
by raback
Yesterday, 23:51
Forum: ElmerSolver
Topic: boundary condition at a dielectric interface
Replies: 3
Views: 18

Re: boundary condition at a dielectric interface

Hi The internal BC should work ok for any Poisson type of equation of Elmer. It does not matter whether the Neumann condition is on internal or external boundary. If the boundary is not conforming, you should add the flux on either side and decleare mortar BCs between the the two boundaries. There m...
by raback
Yesterday, 12:52
Forum: ElmerSolver
Topic: Magnetic field induced by current in a cylindrical wire
Replies: 9
Views: 51

Re: Magnetic field induced by current in a cylindrical wire

Hi

Eddy current power is always computed and saved internally to a list with prefix "res:".

You can supress all saving of "res:" stuff by saying for SaveScalars, for example:

Code: Select all

  Scalars Prefix = String "dummy:"
-Peter
by raback
Yesterday, 12:47
Forum: General
Topic: Magnetic field induced by current in a cylindrical wire
Replies: 9
Views: 49

Re: Magnetic field induced by current in a cylindrical wire

Hi Quickly looking I think you should define the potential AV on the ground. At least one node of the potential needs to be fixed since otherwise the system does not have a unique solution. Even then if you just give Neumann conditions they should allow for a divergence free solution. Now you have a...
by raback
01 Apr 2020, 20:56
Forum: ElmerSolver
Topic: Elastic solver convergence with force boundary conditions
Replies: 4
Views: 24

Re: Elastic solver convergence with force boundary conditions

Hi pascals, Looked at your sif file more thorougly. Unfortunately still didn't run the case. In 3D you have 6 rigid body motions - 3 translations and 3 rotations. If you just fix one node the three rotations will still be ambigious. Currently the fixed single node only defines 3 translations. You sh...
by raback
01 Apr 2020, 17:22
Forum: ElmerSolver
Topic: Elastic solver convergence with force boundary conditions
Replies: 4
Views: 24

Re: Elastic solver convergence with force boundary conditions

Try better preconditioner, like ILU2. -P
by raback
01 Apr 2020, 12:47
Forum: Installation & compilation
Topic: Running QT 5 - cannot install ElmerGUI
Replies: 2
Views: 11

Re: Running QT 5 - cannot install ElmerGUI

Hi Did you use "WITH_QT5" flag? At some platforms this compiles out of the box the ElmerGUI part. There may be further challenges with OpenCascade and known problems with VTK widges (Paraview is anyway to be preferred). So try playing with these starting without any additonal libs. -DWITH_QT5:BOOL=T...
by raback
01 Apr 2020, 12:33
Forum: ElmerSolver
Topic: Magnetic field induced by current in a cylindrical wire
Replies: 9
Views: 51

Re: Magnetic field induced by current in a cylindrical wire

Hi To clarify the background a little. It is the same dynamically loaded module. There is just a hack to create the instance for the VTU solution if the suffix of Post File is .vtu. This mimics the logic that was initially built-in for .ep files (ElmerPost). Most often you don't need to provide any ...
by raback
27 Mar 2020, 17:18
Forum: General
Topic: Capacitance of a perforated plate
Replies: 1
Views: 40

Re: Capacitance of a perforated plate

Hi

1) analytic approximation assuming plate capacitor
2) (5^2-1.5^2)*1e-12

For tests you could have a look at "CapacitanceMatrix" and "elstat_infty".

-Peter
by raback
26 Mar 2020, 15:09
Forum: ElmerGUI
Topic: Benchmark problems
Replies: 9
Views: 1033

Re: Benchmark problems

Hi Writing a short Readm.md for each test would be a good idea. On the other hand, there are >700 tests so not likely that this will be high on the list of things to do. Still as of now the .sif files are searchable. I urge everybody to use some "find" or "grep" scripts to find examples on the Modul...