[Polli]

I have the following problem.
I modified the tutorial case of the twoPhaseEulerFoam out of openfoam extend 3.1 to simulate a packed bed. Now i have the problem, that also after a check of the fvSolutions there is a very instable granular pressure distribution. Because of this instabilities there is a bed movement in a way that it became very flat. The problem starts when the granular reaches the walls.

For the simulation i use the following kineticTheory setup. But a study of different models shows that the problem sould be mostly independent from these settings.

| ========= | |
| \\ / F ield | foam-extend: Open Source CFD |
| \\ / O peration | Version: 3.1 |
| \\ / A nd | Web: http://www.extend-project.de |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object kineticTheoryProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

kineticTheory on;

equilibrium on;

e e [ 0 0 0 0 0 0 0 ] 0.8 ;

alphaMax alphaMax [ 0 0 0 0 0 0 0 ] 0.62 ;

alphaMinFriction alphaMinFriction [ 0 0 0 0 0 0 0 ] 0.4 ;

Fr Fr [ 1 -1 -2 0 0 0 0 ] 0.05 ;

eta eta [ 0 0 0 0 0 0 0 ] 2.0 ;

p p [ 0 0 0 0 0 0 0 ] 5.0 ;

phi phi [ 0 0 0 0 0 0 0 ] 45 ;

viscosityModel HrenyaSinclair;//Syamlal;//Gidaspow;

conductivityModel HrenyaSinclair;//Syamlal;//Gidaspow;

granularPressureModel SyamlalRogersOBrien; //Lun

frictionalStressModel JohnsonJackson;

radialModel LunSavage;//Gidaspow;

HrenyaSinclairCoeffs
{
L L [ 0 1 0 0 0 0 0 ] 5.0e-4 ;
}

// ************************************************** *********************** //

It would be very happy about a input or a suggestion for my problem.