Search found 99 matches
- 22 Oct 2010, 08:26
- Forum: General
- Topic: Application fields of Elmer
- Replies: 37
- Views: 73378
Re: Application fields of Elmer
There are about 10 - 20 users (with a core of about 5 high level users) in Earth Sciences, mainly in Geophysical Fluid Mechanics in Glaciology, spread over the globe that I think should be presented in this statistics.
- 18 Oct 2010, 22:24
- Forum: ElmerPost
- Topic: How to display an additional field variable?
- Replies: 8
- Views: 13403
Re: How to display an additional field variable?
Dear Peter, Apparently things go wrong if a variable with the name Density is added by SaveMaterials. I have the suspicion that this is connected to the fact that Density is in the Elmer keyword database (hence a reserved name). If you give it another name, like for instance Dichte , and simply assi...
- 18 Oct 2010, 16:14
- Forum: ElmerPost
- Topic: How to display an additional field variable?
- Replies: 8
- Views: 13403
Re: How to display an additional field variable?
Dear Peter, I could reply your error with a different, but similar case. When I drop the SaveMaterials (Exec Solver = Never), the run survives. Can you confirm that this is also the case for you? I checked with a debugger, but actually did not find an issue directly in SaveMaterials. Will try to hav...
- 18 Oct 2010, 09:41
- Forum: ElmerSolver
- Topic: communication between partitions in parallel
- Replies: 5
- Views: 3897
Re: communication between partitions in parallel
Hi Lionel, in parallel computing communication (i.e., utilizing the MPI calls) is the main cause of performance limits. The less your parallel tasks have to talk to each other, the more they can spend on doing the number-crunching. Especially if you use blocking communication (when often CPU's are i...
- 16 Oct 2010, 19:45
- Forum: Installation & compilation
- Topic: (last module) fem does not compile.
- Replies: 2
- Views: 4717
Re: (last module) fem does not compile.
For the RHEL 5 issue with the completely outdated gcc version. ASFAIK there is a gcc test-package within RHEL 5 that has a version of gcc that already has the needed feature ...
- 25 Feb 2010, 10:27
- Forum: Installation & compilation
- Topic: user-defined library segmentation fault
- Replies: 4
- Views: 6296
Re: user-defined library segmentation fault
Hi,
hard to tell without debugging info where things go wrong. As a first try I'd take out the "Eliminate Dirichlet". If you have a pathological case, you could send it to me.
Cheers,
Thomas
hard to tell without debugging info where things go wrong. As a first try I'd take out the "Eliminate Dirichlet". If you have a pathological case, you could send it to me.
Cheers,
Thomas
- 24 Nov 2009, 15:12
- Forum: ElmerSolver
- Topic: Modelling turbulent flow
- Replies: 2
- Views: 5503
Re: Modelling turbulent flow
Martijn, I am astonished that you get convergence at all, especially with the higher Re-numbers. perhaps you could take 2 measures: 1) switch in a turbulence model (k-epsilon, for instance) 2) try to resolve (I do not know how fine your mesh is now) finer around the cylinders And finally, some effec...
- 24 Nov 2009, 14:20
- Forum: ElmerSolver
- Topic: derivative wrt normal vector
- Replies: 5
- Views: 7726
Re: derivative wrt normal vector
Hi Suren, (i) In the NS-source code I can see an internal subroutine LCondensate (for nb > 0) ... what does that do actually? I have coded without this... but got a good result in case of Newtonian fluid (flow law exponent n =1)... including this subroutine doesn't affect/improve the outcomes... Thi...
- 09 Sep 2009, 08:59
- Forum: Installation & compilation
- Topic: Installing Elmer on Debian Lenny
- Replies: 7
- Views: 13638
Re: Installing Elmer on Debian Lenny
I'm not 100% sure, but I believe Debian 5.0 provides both VTK (libvtk5-qt4-dev) and OpenCascade (libopencascade-dev). See also http://www.elmerfem.org/wiki/index.php/Debian/Ubuntu_Packages I think the OpenCascade package for Lenny is to be found in Adam Powell's repository (see http://www.opennovat...