Search found 70 matches

by gagliar
15 Oct 2020, 09:17
Forum: ElmerSolver
Topic: There are no Solvers in the System
Replies: 4
Views: 64

Re: There are no Solvers in the System

Hello, In section "Equation 1", there is no solver indicated! You should have a line of that type in this section Active Solvers (1)= 1 But also you should have at least one solver section which tells which equation you are solving! See examples in /elmerfem/fem/tests of the source code. Regards, Ol...
by gagliar
31 Jan 2020, 14:56
Forum: Elmer/Ice
Topic: Time step dependency for Stokes grounding line
Replies: 5
Views: 2254

Re: Time step dependency for Stokes grounding line

Hi Cyrille and Martin, What would be great is that you test the fixes proposed by Brandon Berg and Jeremy Bassis on your setups to see if it changes the dependence to time step of your simulations? My understanding of this fix is that you simply need to reintroduce the acceleration term in the force...
by gagliar
29 Jan 2020, 11:08
Forum: Elmer/Ice
Topic: Time step dependency for Stokes grounding line
Replies: 5
Views: 2254

Time step dependency for Stokes grounding line

Hi all, You may have seen this paper in TCD ( https://www.the-cryosphere-discuss.net/tc-2019-315/ ) by Brandon Berg and Jeremy Bassis regarding the "time step dependence (and fixes) in Stokes simulations of calving ice shelves". As they are solving the contact problem in the same way as us in Elmer/...
by gagliar
18 Nov 2019, 16:59
Forum: Elmer/Ice
Topic: Question regarding StructuredMeshMapper
Replies: 7
Views: 2895

Re: Question regarding StructuredMeshMapper

Hi Norbert, By convention, the boundary conditions in your sif file should write: Boundary Condition 1 Target Boundaries = 1 ... End Boundary Condition 2 Target Boundaries = 2 ... End Boundary Condition 3 Target Boundaries = 3 ... End Boundary Condition 4 Target Boundaries = 4 ... End ! cavity roof ...
by gagliar
18 Nov 2019, 13:41
Forum: Elmer/Ice
Topic: Question regarding StructuredMeshMapper
Replies: 7
Views: 2895

Re: Question regarding StructuredMeshMapper

Hello,

I can already see one problem:

Variable 1 lx = Real 6512.347200
Variable 1 ly = Real 2022.023200

are not the correct lengths (lx = 6.5013280e+03 and ly = 2.0110040e+03 in the DEM files).

Does it improve results to have the correct values?

Regards,
Olivier
by gagliar
18 Nov 2019, 09:49
Forum: Elmer/Ice
Topic: Question regarding StructuredMeshMapper
Replies: 7
Views: 2895

Re: Question regarding StructuredMeshMapper

Dear Nordert,

Can you post your sif and 2d footprint mesh so that I have a look? Did you try to visualize the resulting 3d mesh in paraview instead of ElmerGUI?

Regards,
Olivier
by gagliar
08 Oct 2019, 09:44
Forum: Elmer/Ice
Topic: GlaDS--ElmerICE
Replies: 2
Views: 3622

Re: GlaDS--ElmerICE

Hi Arran,

I only see your message now. Did you solve your problem or is it still not working?

Regards,
Olivier
by gagliar
19 Jun 2019, 09:09
Forum: Elmer/Ice
Topic: GlaDS - how to modify geothermal heat flux?
Replies: 5
Views: 2747

Re: GlaDS - how to modify geothermal heat flux?

It is not possible to switch off the cavity (just the channels). I guess you will not be able to do what you want directly with the GlaDS solver but you will have to write your own solver with the appropriate h=h(N) function implemented.
Regards,
Olivier
by gagliar
04 Jun 2019, 20:28
Forum: Elmer/Ice
Topic: GlaDS - how to modify geothermal heat flux?
Replies: 5
Views: 2747

Re: GlaDS - how to modify geothermal heat flux?

Yes, this is m_b from Eq. (12). So in fact, contrary to what I was saying in my previous post, m_b can be directly evaluated as a function of the geothermal heat flux and the frictional heating.
by gagliar
03 Jun 2019, 09:58
Forum: Elmer/Ice
Topic: GlaDS - how to modify geothermal heat flux?
Replies: 5
Views: 2747

Re: GlaDS - how to modify geothermal heat flux?

Dear Arran, GlaDS doesn't see the geothermal heat flux, but only melt, trough the source term: Hydraulic Potential Volume Source. If you want to include melt from geothermal heat flux (and basal friction and internal deformation) you will have to compute the temperature field and evaluate how much w...