Elmer Discussion Forum

Hi Matthias, sorry for the late reply... Could you try using compilers other than those from elmer distribution? Those are not really meant for anything else than user function compilations, and the packaging might not be complete, deemed from your earliear log file. Allthough the gfortran-elmer use...

Hi, I'm afraid that the 'heat gap' thing (or the ElmerGrid -discont flag) is somewhat broken atm. The thing is that the ElmerGrid inserts a lot of '104' type elements in the mesh.boundary file with boundary-id 1 (!). I think these are connection elements to create matrix entries between the disconti...

Hi, I don't think that the hyprethreading has anything to do with the convegence troubles. It sounds a bit suspicious that you can get a solution easily (?) with one task, but not at all with two tasks. Could you share your model (include the mesh), and i could have a look at what is really going on...

Hi, o as you have set the flag "Radiation Boundary Open", you need to specifiy the ambient temperature the open parts are exposed to. There is an input field for the "External Temperature" in the boundary condition panel for the heat equation, i'm sure. o It seems that you are on...

Hi, The L2-norm (scaled by number of nodes) of the solution vector is not the quantity you should be looking at. Add a SaveScalars solver, e.g. Solver 2 Exec Solver = "After Simulation" equation = Saves Procedure = "SaveData" "SaveScalars" Variable 1 = Displacement Oper...

HI, no, i don't think it's absolutely necessary to uninstall elmer before compiling your own version, although that would surely reduce the possibility of mixed up versions... One more linear solver option you could try (if the CAELinux elmer version is recent enough) is GCR, and play with the setti...

...done. The eigen values are also,btw., shown in the ElmerSolver terminal output.
Juha

Hi,
i think it's a ElmerSolver bug, i'll commit a fix in a minute.
Juha

Hi,

2) what numbers are you looking at? Running ElmerSolver on fem/tests/fsi_beam with different
number of elements, i get for max(abs(Displacement))

• 750: 1.16
  1500: 1.24
  3000: 1.27
  6000: 1.31
  12000: 1.32

which would seem to be OK?

Regards, Juha

Hello,

just tried HYPRE with both openmpi & mpich2, seemed to work just fine. This, i guess, would hint
to a installation problem.

Are you able to solve your problem serially?
Juha