Search found 3395 matches

by raback
Yesterday, 00:06
Forum: ElmerSolver
Topic: Result Output error
Replies: 2
Views: 41

Re: Result Output error

Hi Mark Ok, have to look into this someday. Seems strange. If the Name keyword is there then the ValueList_t associated with the boundary is not even empty. Btw, there is no need to define natural BC (heat flux = 0) since it happens when you do nothing. It may of course be helpful for people reading...
by raback
14 Mar 2019, 01:36
Forum: Bug reports
Topic: issues with VTU output generation, adaptive/tranisent solutions
Replies: 6
Views: 126

Re: issues with VTU output generation, adaptive/tranisent solutions

Hi

Virtual machine disk space had filled up. At least the .exe files should now be updated automatically. Have to still look why the .zip files didn't appear.

-Peter
by raback
12 Mar 2019, 11:44
Forum: Bug reports
Topic: issues with VTU output generation, adaptive/tranisent solutions
Replies: 6
Views: 126

Re: issues with VTU output generation, adaptive/tranisent solutions

Hi Njank,

I didn't study that. Using these settings, does the .pvd file still go to wrong location?

-Peter
by raback
11 Mar 2019, 14:25
Forum: ElmerSolver
Topic: Problem with border conditions within WhitneyAVSolver
Replies: 2
Views: 93

Re: Problem with border conditions within WhitneyAVSolver

Hi Roman, Yes, there seems to be a problem. It is related to elimination of edge dofs in conjunction with Dirichlet conditions. It only happens if there are more then one iteration. Hence, for your test problem you could reduce the number of nonlinear iterations to one. I have a tentative fix, but w...
by raback
11 Mar 2019, 14:21
Forum: ElmerSolver
Topic: Noconforming mesh
Replies: 2
Views: 60

Re: Noconforming mesh

Hi MrBenson Yes, sort off. There are quite a few (39) tests involving mortar FEs: elmeruser@ElmerCSC-VM ~/Source/elmerfem/fem/tests $ grep -i 'apply mortar bcs' */*.sif | wc -l 39 Mortar FEs have been primarily used to allow continuity of solution over moving interfaces. By default the resulting sys...
by raback
11 Mar 2019, 11:45
Forum: Bug reports
Topic: issues with VTU output generation, adaptive/tranisent solutions
Replies: 6
Views: 126

Re: issues with VTU output generation, adaptive/tranisent solutions

Hi Yes, there were problems. Currently the meshes are saved and the VTU output always wanted to save the 1st and the last mesh. The 1st one is actually associated to the VtuOutputSolver itself. I added a feature that let's you choose which Solver is used to define the mesh to be saved. Other meshes ...
by raback
11 Mar 2019, 11:39
Forum: Bug reports
Topic: adaptive remesh + discontinuity = segfault
Replies: 1
Views: 48

Re: adaptive remesh + discontinuity = segfault

Hi NJank, This is a combination of two features that are difficult to combine. It is not a low hanging fruit since 1) the error indicator should consider the jump 2) the remeshing should be constrained to be the same over both sides of the BC 3) the refinement routine should be modified to create a ...
by raback
08 Mar 2019, 17:41
Forum: ElmerSolver
Topic: Applying boundary condition to large number of nodes
Replies: 7
Views: 142

Re: Applying boundary condition to large number of nodes

Hi

The Dirichlet conditions is always done by library subroutines and hence is explained in the ElmerSolver manual.

The Neumann conditions are module specific and are explained in Elmer Models Manual under the correct module.

-Peter
by raback
08 Mar 2019, 01:05
Forum: ElmerSolver
Topic: Using restart file at higher mesh level
Replies: 5
Views: 97

Re: Using restart file at higher mesh level

Hi Mark,

Yes, there is a problem. Elmer by default saves the lower mesh levels. They can be used for multigrid levels, or to save results on a coarser mesh etc. But usually not needed. Then set,

Code: Select all

  Mesh Levels = 2
  Mesh Keep = 1
I may tinker the operation...

-Peter
by raback
07 Mar 2019, 22:45
Forum: ElmerSolver
Topic: Applying boundary condition to large number of nodes
Replies: 7
Views: 142

Re: Applying boundary condition to large number of nodes

Hi The Neumann conditions and Dirichlet conditions are quite different. In Dirichlet condition we directly set a value of the variable. You can generalize this quite easily from boundaries to bodies. The SI unit is m. Also the "condition" makes sense since it is either on or off. The Neumann conditi...