Search found 4812 matches

by raback
20 Feb 2024, 18:04
Forum: ElmerSolver
Topic: SIGSEGV Fault in parallel, but not serial
Replies: 7
Views: 127

Re: SIGSEGV Fault in parallel, but not serial

Hi I changed the MPI communicator and the solver may now function better. Prior to this it did work in parallel but only if the Coil was active in all partitions. The mortar stuff would be much more difficult to implement fully parallel. The issue there is that all search algorithms should be parall...
by raback
19 Feb 2024, 22:06
Forum: General
Topic: Point data in parallel runs [SOLVED]
Replies: 4
Views: 606

Re: Point data in parallel runs

Hi I tried to fix this. At one point the saving of point data was made more generic (e.g. it can handle Hcurl elements at the node) but it may have broken this parallel operation which was not guarded by tests. Thanx for reporting. It is good idea to use the "exact" mode that find the elem...
by raback
19 Feb 2024, 19:59
Forum: ElmerSolver
Topic: How to Start Using Particle Dynamics Solver
Replies: 15
Views: 4722

Re: How to Start Using Particle Dynamics Solver

Hi Alberto, The velocity should be the velocity of the particles. If there is no electric field the particles will stay at rest (in this test). When I increase |B| from 1 to 2 the results change at least for me. Maybe you set the electric field to zero and particles never start. This is really the o...
by raback
19 Feb 2024, 12:33
Forum: ElmerSolver
Topic: lagrangian element selection
Replies: 7
Views: 159

Re: lagrangian element selection

Hi I don't think the "double usage" is anything special. This lies in the very heart of isoparametric elements. Here is one paper from 1968... https://www.sciencedirect.com/science/article/abs/pii/0020768368900310 Now there is a pragmatic reason not improve the geometry description using t...
by raback
19 Feb 2024, 12:12
Forum: ElmerSolver
Topic: Temperature plotted in non activated body
Replies: 11
Views: 158

Re: Temperature plotted in non activated body

Hi I would use "Threshold" filter in paraview to only activate the regions of interest. Or maybe even better use "vtu part collection". This creates separate file of each domain. If you give bodies (and BCs) nice names this is very informative. For more instructions see: http://w...
by raback
15 Feb 2024, 12:58
Forum: ElmerSolver
Topic: How to Start Using Particle Dynamics Solver
Replies: 15
Views: 4722

Re: How to Start Using Particle Dynamics Solver

Hi You could save the results and do a restart where you omit recomputation (deactivating the unnecessary solvers). You could fit a point cloud coming elsewhere etc. containing B field, for example. You should maybe define "splat". Generally there are models on what happens at boundaries. ...
by raback
15 Feb 2024, 02:30
Forum: ElmerSolver
Topic: lagrangian element selection
Replies: 7
Views: 159

Re: lagrangian element selection

Hi, Probably you cannot combine 1st and 2nd order Lagrange elements with the same mesh. Lagrange element always follows the number of nodes in the element. You can have different p-elements. E.g. "Element = p:2". This uses the lowest order Lagrange elements for the shape but the order of e...
by raback
14 Feb 2024, 14:46
Forum: ElmerSolver
Topic: Electric dipole. Convergence problem.
Replies: 8
Views: 226

Re: Electric dipole. Convergence problem.

Hi,

You should have both BCs at the same time.

VarName = Real ! nodal dofs (H0)
VarName {e} = Real ! refers to edge dofs (Hcurl)
VarName {f} = Real ! refers to face dofs (Hdiv)

So "AV" has both the scalar (H0) and vector (Hcurl) potential in the same field.

-Peter
by raback
13 Feb 2024, 18:45
Forum: ElmerSolver
Topic: Magnetostatic pair of coils
Replies: 12
Views: 397

Re: Magnetostatic pair of coils

Checking at SOLVER.KEYWORDS this was introduced last May. We almost always use "devel" branch and the nightly builds are based on that too. -Peter
by raback
13 Feb 2024, 18:37
Forum: ElmerSolver
Topic: Magnetostatic pair of coils
Replies: 12
Views: 397

Re: Magnetostatic pair of coils

Your Elmer is older than mine...