Search found 3326 matches

by raback
Today, 11:48
Forum: ElmerSolver
Topic: Heating a soil matrix that contains water
Replies: 2
Views: 29

Re: Heating a soil matrix that contains water

Hi Yes, multiphase modeling tends to be complicated. If you can write down the equations you need to solve I can give you some hints. The devil often lies in the detail of the formulation. Luckily in your case the Reynolds number will probably be small so you don't need to mix in turbulence. I guess...
by raback
15 Dec 2018, 15:51
Forum: ElmerSolver
Topic: Apply Lorentz force as body force for Lin Elast solver
Replies: 1
Views: 34

Re: Apply Lorentz force as body force for Lin Elast solver

Hi I hope you use the same mesh for both. Then the way to do this is: 1) In postprocessing ask "Calculate Nodal Forces" and you should get fields "Nodal Force i", i=1,2,3 2) For the BC where you want to give the force say "Displacement i Load = Equals "Nodal Force i", i=1,2,3 This is convenient sinc...
by raback
14 Dec 2018, 01:34
Forum: ElmerSolver
Topic: Question about Calculating capacitance using Elmer Solver
Replies: 2
Views: 15

Re: Question about Calculating capacitance using Elmer Solver

Hi 1) I guess you can freely set the BCs such that you get you desired symmetry. Elmer does not have any automated way of setting "even" and "odd" modes. 2) You can of course set the potential by hand. This works nicely if you have just one body and your capacitance matrix has one value. If you have...
by raback
13 Dec 2018, 16:27
Forum: ElmerSolver
Topic: magnetic field of a straight wire due to static current
Replies: 2
Views: 34

Re: magnetic field of a straight wire due to static current

Hi Phlix

Nasty little problem in the sif file: You had wrong size of Target Boundaries in the AirSurface. Try with this:

Code: Select all

Boundary Condition 5
  Name = "AirSurface"
  Target Boundaries(4) = 1 2 9 12

  AV {e} 1 = Real 0.0
  AV {e} 2 = Real 0.0
End
-Peter
by raback
13 Dec 2018, 15:52
Forum: ElmerSolver
Topic: Accuracy of results / microwave waveguide
Replies: 10
Views: 510

Re: Accuracy of results / microwave waveguide

Hi

The 2nd order results do not look too good. Are you sure it converged well?

Maybe you could share your case. It would be interesting to study the convergence behavior in more detail.

-Peter
by raback
06 Dec 2018, 21:49
Forum: Installation & compilation
Topic: I cannot install Elmer on ubuntu 18.04
Replies: 9
Views: 724

Re: I cannot install Elmer on ubuntu 18.04

Hi

What's your working directory (pwd)? You don't happen to have a file named PMSM? I remember there was has been problems sometimes when the path included spaces...

-Peter
by raback
05 Dec 2018, 16:37
Forum: General
Topic: Using Elmer to model silly putty deforming
Replies: 1
Views: 501

Re: Using Elmer to model silly putty deforming

Hi student The problem seems simple but to model it may be rather difficult. You can either use a Eulerian or Lagrangian method to model the deformation. Eulerian method has a fixed grid and can deal with all kinds of geometries. However, the shape is define by a signed distance function so it is ne...
by raback
29 Nov 2018, 22:36
Forum: ElmerSolver
Topic: Extract simulations results at specific points
Replies: 11
Views: 1401

Re: Extract simulations results at specific points

Yes, sorry columns 3-5, not 1-3. -Peter
by raback
29 Nov 2018, 17:13
Forum: General
Topic: Is Elmer suitable for calculating the radiation pattern of an antenna?
Replies: 5
Views: 394

Re: Is Elmer suitable for calculating the radiation pattern of an antenna?

Hi There is not really much. The equation is presented as Ch. 18 in Elmer Models Manual. There are only a few consistency tests among the hundreds: elmeruser@ElmerCSC-VM ~/Source/elmerfem/fem/tests $ grep VectorHelmholtzSolver */*.sif VectorHelmholtzWaveguide2/waveguide.sif: Procedure = "VectorHelmh...
by raback
29 Nov 2018, 16:42
Forum: General
Topic: Is Elmer suitable for calculating the radiation pattern of an antenna?
Replies: 5
Views: 394

Re: Is Elmer suitable for calculating the radiation pattern of an antenna?

Hi, I think the BCs you ask are pretty standard stuff. Should be no problem. -Peter