Search found 1168 matches

by annier
23 Feb 2022, 21:13
Forum: ElmerSolver
Topic: System diverged over tolerance
Replies: 7
Views: 5534

Re: System diverged over tolerance

As your case is so small you could use "Direct" solver and there "Linear System Direct Method = umfpack". This will at least get rid of the 1st linear system convergence issue. Peter, Are there any other addition solutions to using direct solver? For coupled heat and flow solver...
by annier
15 Nov 2021, 18:17
Forum: ElmerSolver
Topic: Strong coupling between different models
Replies: 3
Views: 1742

Re: Strong coupling between different models

Hi Peter,
Thank you for providing me with the information about the test examples. I will study some examples of fluid-structure and structure-structure coupling.

Yours Sincerely,
Anil Kunwar
by annier
08 Oct 2021, 16:23
Forum: General
Topic: About Coordinate Scaling in Elmer Plugin in Salome
Replies: 1
Views: 2437

Re: About Coordinate Scaling in Elmer Plugin in Salome

Hi, The dimensions of the geometry /mesh exported from Salome do not have any unit, and so the same mesh can be designed in many ways in the FEM simulation. The distance 603.268 is a unitless number, and so you can imagine it to be of any unit. Now , if the above unitless length of 603.268 is assume...
by annier
08 Oct 2021, 03:03
Forum: ElmerSolver
Topic: Using ElmerSolver for Flow
Replies: 2
Views: 1391

Re: Using ElmerSolver for Flow

Test examples using solely flow solver are also available in github repository of Elmer.
https://github.com/ElmerCSC/elmerfem/tr ... wResNoslip
https://github.com/ElmerCSC/elmerfem/tr ... lowResSlip
by annier
08 Oct 2021, 02:58
Forum: ElmerSolver
Topic: Time dependent 3D Maxwell material viscoelastic Earth deformation
Replies: 23
Views: 5750

Re: Time dependent 3D Maxwell material viscoelastic Earth deformation

Thomas,
Thank you for the test example. Especially, it is helpful for us to make comparisons between MATC and lua style expressions for writing functions.

Yours Sincerely,
Anil
by annier
08 Oct 2021, 02:51
Forum: ElmerSolver
Topic: Strong coupling between different models
Replies: 3
Views: 1742

Re: Strong coupling between different models

Hi Peter,
Are there any tests available in github repository for the monolithic solver (strong coupling)?

Yours Sincerely,
Anil Kunwar
by annier
08 Oct 2021, 02:29
Forum: ElmerSolver
Topic: Elmer Command-Line Workflow -> Program received signal SIGSEGV
Replies: 11
Views: 3262

Re: Elmer Command-Line Workflow -> Program received signal SIGSEGV

As mentioned in previous posts, the error Program received signal SIGSEGV: Segmentation fault - invalid memory reference. happens due to many known and unknown reasons that finally leads the solver to stop running. I have encountered the errors for the following reasons: 1. Large mesh size compared ...
by annier
04 Sep 2021, 17:10
Forum: ElmerSolver
Topic: Level set Courant number
Replies: 3
Views: 1854

Re: Level set Courant number

How Can I compute the Courant number for the level set? Probably my question is trivial. I know that the Delta_x(grid dimension), Delta_t (time step) and velocity V appear in the Courant number, but what is that V? How can I compute in a simulation? Regards, Andrea The V in Courant number (C) = V* ...
by annier
04 Sep 2021, 17:02
Forum: ElmerSolver
Topic: Level set Courant number
Replies: 3
Views: 1854

Re: Level set Courant number

Dear Andrea,
You have to define the Courant number (less than or equal to 1) yourself in the simulation section of the sif file.
If you do not define it there, the default value of Courant number = 1 is utilized in the simulation.
by annier
04 Sep 2021, 16:54
Forum: General
Topic: Run the sif file by ElmerGui Windows
Replies: 6
Views: 5750

Re: Run the sif file by ElmerGui Windows

Can you please paste the message given by the ElmerSolver ?
The path of the solver input file must be defined to the ElmerSolver for the solve to run perfectly.