Search found 4449 matches

by raback
26 Nov 2022, 17:08
Forum: External tools
Topic: which Gmsh file format is best to use?
Replies: 1
Views: 20

Re: which Gmsh file format is best to use?

Both should be fine. If you have issues provide the file causing problems. -Peter
by raback
23 Nov 2022, 18:47
Forum: General
Topic: Mortar BC with Whitney Solver
Replies: 9
Views: 153

Re: Mortar BC with Whitney Solver

Hi We had a look at the case as it was looking bad for the eye. There is a challenge in convergence. This comes from the coarse mesh and mortar BCs. You could try switching the slave and master pieces for the mortar BC and using the following linear system settings: Linear System Iterative Method = ...
by raback
23 Nov 2022, 18:34
Forum: ElmerSolver
Topic: 3D Electrostatic Simulation
Replies: 7
Views: 228

Re: 3D Electrostatic Simulation

You can try

Code: Select all

Simulation :: Calculate Mesh Pieces = Logical True
It has not been parallelized. The intended use is exactly this - to check that the mesh is in one piece.

-Peter
by raback
23 Nov 2022, 17:35
Forum: ElmerSolver
Topic: Helmholtz solver and eigen values
Replies: 10
Views: 73

Re: Helmholtz solver and eigen values

Hi The solution of the linear system for (d^2 + k^2)f with only zero BCs has trivial solution f=0. You know that you have some frequency, and want to wake it up you need to provide some source (which is in the very same frequency). If you don't know your system frequency then you're solving a differ...
by raback
23 Nov 2022, 13:43
Forum: ElmerSolver
Topic: Helmholtz solver and eigen values
Replies: 10
Views: 73

Re: Helmholtz solver and eigen values

Hi HelmholtzSolver has been written as the harmonic version of the solver. Hence you need to give frequency. This solver cannot be used to compute eigenmodes. There is also a WaveSolver that can be solved in transient, harmonic or eigenmode mode. See test case "WaveEquEigen". Basically thi...
by raback
21 Nov 2022, 12:17
Forum: ElmerSolver
Topic: Transient Phase Change Solver
Replies: 8
Views: 122

Re: Transient Phase Change Solver

Hi Roland, In transient case you set the interface to be at melt point, compute the heat fluxes, and from the timestep can deduce the speed of the melt interface. For crystal growth with pulling you need to in some way follow this velocity (feedback) or use some predefined pull velocity. The feedbac...
by raback
21 Nov 2022, 01:13
Forum: ElmerSolver
Topic: MagnetoDynamics2D Solver
Replies: 1
Views: 59

Re: MagnetoDynamics2D Solver

Hi, This was just fixed in "devel" branch. It was introduced when adding some superconductivity stuff to circuits. -Peter
by raback
20 Nov 2022, 21:23
Forum: ElmerSolver
Topic: Transient Phase Change Solver
Replies: 8
Views: 122

Re: Transient Phase Change Solver

Hi 1) I think you need to have consistent normals. At internal interface this is ambiguous. I think this is the reason, I'm not sure though... 2) As the free surface in 3D is h(x,y) there needs to be a unique value for each (x,y) point. 3) Add Latent Heat + velocity 4) elmeruser@elmeruser-VirtualBox...
by raback
17 Nov 2022, 16:18
Forum: ElmerSolver
Topic: Transient Phase Change Solver
Replies: 8
Views: 122

Re: Transient Phase Change Solver

Hi Roland, It is assumed that the phase surface is associated to some coordinate direction. Like in your case it is the x-coordinate and y-coordinate is then frozen. The PhaseSurface is the displacement of this active coordinate at the free surface only. Hence the MeshSolver is needed to extend the ...
by raback
11 Nov 2022, 11:17
Forum: General
Topic: Problem: Elastic plate solver with 3 pins
Replies: 6
Views: 73

Re: Problem: Elastic plate solver with 3 pins

Plate solver has normal displacement and its derivatives in (x,y) as the three degrees of freedom.