Search found 183 matches

by Takala
02 Aug 2013, 14:09
Forum: Software development
Topic: Linear Elasticity Solver exaggerate displacements
Replies: 2
Views: 3814

Linear Elasticity Solver exaggerate displacements

Hello, Sometimes it would be nice to visualize very small displacements by exaggerating them (that is multiplying them with some constant). What is the easiest way to do this? In ElmerGUI one can write with MATC nodes=nodes+Displacement*constant. I guess that would be the easiest. However, sometimes...
by Takala
24 Jul 2013, 13:29
Forum: ElmerSolver
Topic: How to implement stopping criterion
Replies: 4
Views: 1146

Re: How to implement stopping criterion

Hi, instead of CALL FATAL, you can also say CALL ListAddConstReal(Model % Simulation,'Exit Condition',1.0_dp) see here http://www.elmerfem.org/forum/viewtopic.php?f=3&t=2674#p8163 for an example UDF where this line of code is used. HTH, Matthias Neat! I didn't know that and there seems not to be an...
by Takala
24 Jul 2013, 07:30
Forum: ElmerSolver
Topic: How to implement stopping criterion
Replies: 4
Views: 1146

Re: How to implement stopping criterion

I'm not sure if you can do that purely in SIF. A friend of mine studied quenching of superconducting cable. He wanted to have a stopping criterion with a similar idea to yours: when the temperature of the superconductor exceeds certain temperature limit at some point, then quench is detected and the...
by Takala
18 Jul 2013, 11:24
Forum: Installation & compilation
Topic: Not configuring umfpack package
Replies: 3
Views: 2568

Re: Not configuring umfpack package

Hi,

did you try the instructions for ubuntu 12.04?
viewtopic.php?f=2&t=2706

Maybe they apply in your case as well?

If that doesn't work please see in the "config.log" (or post it here).

Cheers,

Eelis
by Takala
18 Jul 2013, 08:31
Forum: ElmerSolver
Topic: Vector valued User Function
Replies: 3
Views: 1428

Vector valued User Function

Hi All, I was wondering if there is a way to write and use vector/tensor valued User Functions? For example if one uses conductivity vector in HeatSolver module then the syntax is the following (in 3D): Heat Conductivity(3) = Real kx ky kz where kx, ky and kz are the conductivities in x, y and z dir...
by Takala
04 Jul 2013, 11:48
Forum: ElmerSolver
Topic: Parallel NS-kepsilon-HT: defect in velocity field
Replies: 9
Views: 2290

Re: Parallel NS-kepsilon-HT: defect in velocity field

Hello, I found the problem: I used to use this command with ElmerGrid: ElmerGrid 8 2 file.unv -autoclean -metis 32 4 -partdual And it is faulty! Now I use these: first convert to serial run ElmerGrid 2 2 file.unv -autoclean Then do the partitioning by using the serial elmer mesh format ElmerGrid 2 2...
by Takala
19 Jun 2013, 16:26
Forum: ElmerSolver
Topic: Parallel NS-kepsilon-HT: defect in velocity field
Replies: 9
Views: 2290

Re: Parallel NS-kepsilon-HT: defect in velocity field

some errors (see attached log) when trying to run parallel (NS-heat coupling).

Cheers,

Eelis
by Takala
19 Jun 2013, 15:26
Forum: ElmerSolver
Topic: Parallel NS-kepsilon-HT: defect in velocity field
Replies: 9
Views: 2290

Re: Parallel NS-kepsilon-HT: defect in velocity field

Hello, I think this problem has to do with the Result Output Solver: I tested the Step_ke case from /tests and one can see the issue also there if Result output solver is used. However, in ep format there are no problems at all. Edit. No it is not. Now I tested again with my own model and ep file ha...
by Takala
19 Jun 2013, 11:24
Forum: Software development
Topic: Creating a new Element (some guide lines, please)
Replies: 6
Views: 6684

Re: Creating a new Element (some guide lines, please)

Hi Mika, very nice. I think this might actually be perfect for me if it does work. I will report here the feasibility of this trick as soon as I have time to test it. I still need to do the equations first. btw. I tested the low field approximation and it works well and is easy to make. Cheers, Eelis
by Takala
18 Jun 2013, 11:08
Forum: ElmerSolver
Topic: Parallel NS-kepsilon-HT: defect in velocity field
Replies: 9
Views: 2290

Re: Parallel NS-kepsilon-HT: defect in velocity field

Hello, I am running a Navier-Stokes simulation with k-epsilon turbulence model coupled with heat transfer equation. When I do a serial run everything is fine, however with parallel run I get strange results: One symptom is the defects in the velocity field. These defects take place in the interface...