Search found 56 matches

by denis.cohen
21 Dec 2013, 19:02
Forum: Elmer/Ice
Topic: Coarse to fine mesh interpolation
Replies: 6
Views: 9569

Re: Coarse to fine mesh interpolation

Hi again,

Does this Mesh2Mesh works in parallel?
Problem is that I don't have the same number of processors in my coarse mesh runs than in my fine mesh runs.
Is this going to work or am I asking for too much?

Thanks

Denis
by denis.cohen
19 Dec 2013, 18:45
Forum: Elmer/Ice
Topic: Coarse to fine mesh interpolation
Replies: 6
Views: 9569

Re: Coarse to fine mesh interpolation

Hi everyone,

Thanks for all your response.
I'll try your suggestions and get back to you.
I do want to interpolate to restart a new simulation on a finer mesh.

Thanks

Denis
by denis.cohen
19 Dec 2013, 17:05
Forum: Elmer/Ice
Topic: Coarse to fine mesh interpolation
Replies: 6
Views: 9569

Coarse to fine mesh interpolation

Hi everyone,

I'd like to interpolate results (velocity/pressure/temperature) from a coarse mesh onto a fine mesh.
Are there tools in Elmer/ElmerIce to do such operation?

Thanks

Denis Cohen
by denis.cohen
29 Nov 2013, 21:41
Forum: Elmer/Ice
Topic: Problem with solving temperature after inverse method
Replies: 15
Views: 21750

Re: Problem with solving temperature after inverse method

Hi Martina, Unfortunately this is a paleo ice stream so no data on velocity so no way to invert for a sliding coefficient. It seems that a finer mesh improves the velocity field at the bed (no more sliding velocity > surface velocities). Still some temperature that our too cold for some unknown reas...
by denis.cohen
27 Nov 2013, 14:42
Forum: Elmer/Ice
Topic: Problem with solving temperature after inverse method
Replies: 15
Views: 21750

Re: Problem with solving temperature after inverse method

Hi Martina, I am setting Mesh Velocities to zero and that works fine. It's a bit confusing when doing a restart but I got it to work. You may be right about a Slip Coefficient that is not constant under the glacier. How did you apply a non-constant slip coefficient? What did you use to make it varia...
by denis.cohen
27 Nov 2013, 13:08
Forum: Elmer/Ice
Topic: Problem with solving temperature after inverse method
Replies: 15
Views: 21750

Re: Problem with solving temperature after inverse method

Hi Martina, Curiously my problems are more when I try steady state simulations than when I do transients. Transients have (almost) always converged. In my problem I start with a given glacier geometry and temperature and I first relax the free surface (not solving for Temp) for 50-100 years (or more...
by denis.cohen
24 Nov 2013, 12:42
Forum: Elmer/Ice
Topic: Problem with solving temperature after inverse method
Replies: 15
Views: 21750

Re: Problem with solving temperature after inverse method

Hi Everyone, I am writing to this post instead of opening a new one since I think this is a related problem. I am solving a paleo ice-flow problem, trying to reconstruct part of an ice field at the LGM so I have no temperature or ice velocity data, only a bed and ice surface DEM. First, I start with...
by denis.cohen
12 Nov 2013, 12:59
Forum: ElmerSolver
Topic: error DetectExtrudeStructure
Replies: 13
Views: 9213

Re: error DetectExtrudeStructure

Hi Peter,

I have no lateral deformation, only z, so should be keeping a nice extruded structure.
So I guess it's ok to use the internal extruded mesh and the Mesh Update together.

Will look to see what gives.

Thanks

Denis
by denis.cohen
12 Nov 2013, 12:42
Forum: ElmerSolver
Topic: error DetectExtrudeStructure
Replies: 13
Views: 9213

Re: error DetectExtrudeStructure

Hi Peter, No this happens in the first NS solver call. Before that it went through the StructureMeshMapper with no apparent problem: StructuredMeshMapper: --------------------------------------- StructuredMeshMapper: Performing mapping on a structured mesh StructuredMeshMapper: ---------------------...
by denis.cohen
12 Nov 2013, 12:07
Forum: ElmerSolver
Topic: error DetectExtrudeStructure
Replies: 13
Views: 9213

Re: error DetectExtrudeStructure

Hi Peter, Indeed a small stupid mistake. That + playing with the dot product solved this problem. However, I am puzzled by another, which again may have a simple answer: In the NS solver I get this error: FlowSolve: ------------------------------------- FlowSolve: NAVIER-STOKES ITERATION 1 FlowSolve...