Search found 87 matches

by tzwinger
13 Mar 2015, 16:51
Forum: Elmer/Ice
Topic: trouble going from diagnostic to prognostic
Replies: 6
Views: 7282

Re: trouble going from diagnostic to prognostic

Hello, I didn't realize your MeshUpdate in the first instance - sorry. Then you can do it such that you just initialize, imposing the data directly to Top Surface and then couple the FS to the MeshUpdate variable, sacrificing the advantage of having a vertically structured mesh. Or, you do as I sugg...
by tzwinger
10 Mar 2015, 09:19
Forum: Elmer/Ice
Topic: trouble going from diagnostic to prognostic
Replies: 6
Views: 7282

Re: trouble going from diagnostic to prognostic

Initial Condition 2 Zs = Variable Coordinate 2 Real cubic include "icescarp70degground.dat" End RefZs = Equals Coordinate 2 End should do it. So no "Equals" for the Zs-initialization. And then, of course, you have to take care that the solver that updates the mesh (StructuredMeshMapper) is executed...
by tzwinger
09 Mar 2015, 11:06
Forum: Elmer/Ice
Topic: trouble going from diagnostic to prognostic
Replies: 6
Views: 7282

Re: trouble going from diagnostic to prognostic

The main issue is conected to the fact that your "Top Surface" keyword points to the initial data all the time, but rather should point to the result of your free-surface evolution equation. So, the good strategy would be to let the initial shape define the initial condition for the free-surface var...
by tzwinger
12 Nov 2014, 08:55
Forum: Elmer/Ice
Topic: Help to simulate Sheet/Shelf problems
Replies: 4
Views: 5296

Re: Help to simulate Sheet/Shelf problems

Hello,
seems you want to solve the Grounding Line Problem, which for 2D is explained (including link to example) under http://elmerice.elmerfem.org/wiki/doku. ... undingline

Good luck!

Best Regards,

Thomas
by tzwinger
26 Sep 2014, 11:22
Forum: Elmer/Ice
Topic: Setting basal pressure til fraction of overburden
Replies: 5
Views: 7482

Re: Setting basal pressure til fraction of overburden

Hi, perhaps the name "External Pressure" is misleading. It is basically the normal component of the Cauchy stress vector, which is the Cauchy stress tensor dot product with surface normal. It follows from the weak formulation of the Stokes equation. It is a Neumann condition to the system. If you no...
by tzwinger
23 Sep 2014, 12:15
Forum: Elmer/Ice
Topic: Setting basal pressure til fraction of overburden
Replies: 5
Views: 7482

Re: Setting basal pressure til fraction of overburden

Hi Christian, I guess you are using this 0.6*overburden as the effective normal pressure in some sliding law, right? Did you check that your values are dimensional consistent with the rest of your material parameters? Simply, if you do your computations in MPa-a-m system (which usually is the case i...
by tzwinger
05 Sep 2014, 12:30
Forum: Elmer/Ice
Topic: Test failed for test case 3 (Contact) in Elmer/Ice
Replies: 5
Views: 6406

Re: Test failed for test case 3 (Contact) in Elmer/Ice

So your case went through - something then went wrong outside the run. Reading your error message from before, my suspicion is, that perhaps your permissions for the test subdirectory are such that you are not allowed to write anything into it. If you do a chmod -R u+rwX contact does it help? Best R...
by tzwinger
04 Sep 2014, 22:50
Forum: Elmer/Ice
Topic: Test failed for test case 3 (Contact) in Elmer/Ice
Replies: 5
Views: 6406

Re: Test failed for test case 3 (Contact) in Elmer/Ice

Hi, unfortunately, I am not able to reproduce your error. Could you try to go into the subdirectory of this test and run it manually and send the output. To that end, you have to declare the following variables (provided you are running bash) export ELMER_GRID="ElmerGrid" export FORT="elmerf90" expo...
by tzwinger
07 Aug 2014, 09:54
Forum: Elmer/Ice
Topic: non-reproducible machine-specific convergence failure
Replies: 3
Views: 5133

Re: non-reproducible machine-specific convergence failure

Hi Rupert,
I send you the setup scripts of MUMPS on taito - although they might not be of particular help, as system differs. If I interpret them right, we use parmetis there.

Cheers,

Thomas
by tzwinger
07 Aug 2014, 08:17
Forum: Elmer/Ice
Topic: non-reproducible machine-specific convergence failure
Replies: 3
Views: 5133

Re: non-reproducible machine-specific convergence failure

Hi Rupert, Checking the commit history of the SVN repository, the most likely changes after revision 6798 that could influence your simulation where actually committed by you (Grid2DInterpolator.f90 and FlowDepth,f90). I don't know if those influence something set for your Stokes solver. Else, my la...