[darai]

Hello Foamers,

I am trying to break into the multiphase fluid dynamic problem (for futher problems I need Euler-Euler solver) with bubbleFoam by a serie of simple examples and I stucked on a very simple simulation:

The case is a large bubble in a closed domain. I want the air bubble to crush to the top of the tank and create the "air pocket" there. The first 2D case was all right, but the 3D case is divergent when the bubble toutches the side wall (as it is expanding along the top).

For better ilustration, here is the cut through the 3D domain: http://imageshack.us/photo/my-images/267/3dmodel.png/
I am using simple boundary conditions:

Ua = Ub = uniform (0 0 0) everywhere
p = buoyant pressure 0 on boundary and uniform 0 in the volume
k = zeroGradient on the boundary and 1e-8 in the volume
epsilon= zeroGradient on the boundary and 0.1 in the volume
alpha= zeroGradient at the boundary and creates a large bubble in the volume
shown on the picture: http://imageshack.us/photo/my-images...elinitial.png/

The time step is calculated, max 0.01 and the turbulence is off.

The last state before the divergense looks like on the picture: http://imageshack.us/photo/my-images...elcrashed.png/
What did I wrong? I don't believe that it is something too complicated...
Thanks in advance for any clues...