Elmer Discussion Forum

Hi, there is an example of such a case in source distribution in folder "fem/tests/HeatGap". Firstly, you need to define the contact boundary as having double nodes using ElmerGrid option '-discont id' (for example) , as in ElmerGrid 2 2 mesh -discont 1 if you have a Elmer mesh files is 'm...

Hi, a few comments on the 'grad p' discretization: In addition to pressure not being integrated by parts, the (incompressible) continuity equations IS integrated by parts. These changes have effect on the boundary conditions, as opposed to the default stuff: - pressure Dirichlet boundary conditions ...

Hi, you should usually set the "Reference Pressure" when dealing with compressible flows. An alternative is to set "initial" and "external" pressure values such that absolute pressure values may be used to compute the density values. It will, however, usually be benefic...

OK,

could you post a test case?

Alternatively you could try a more recent ElmerSolver version, maybe this would
work for you:

http://www.elmerfem.org/wiki/index.php/ ... u_Packages

or compile ElmerSolver from the svn trunk/ sources ?

Regards, Juha

Hi Selim, - do you have enough disk space for your results? - are you running on windows or linux or ? - what is the exact Elmer version you are running (so that i can look up the source code line reffered to in the message) ? The version number should be visible in the banner when ElmerSolver start...

Hi,

you can get the source code from sourceforge www-interface, for example:

http://elmerfem.svn.sourceforge.net/vie ... z?view=tar

Regards, Juha

Hi Martina, one (addmittedly somewhat "hackish") way that works for me: To interpolate a scalar field "Poison" from mesh "a" to mesh "b", with mesh "a" having results in file "test.result" you could use a small solver and sif files below. (...