Elmer Discussion Forum

Hello,
to my information it is not possible to revolve axi-symmetric results inside ElmerPost. That would demand major modifications of the *.ep result file.

All the best,

Thomas

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.

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...

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...

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...

For the RHEL 5 issue with the completely outdated gcc version.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 ...

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

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...

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...

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...