[Dreoasteh]

Hi,

I'm currently running a chtMultiRegionSimpleFoam case which I have uploaded in this dropbox link.

The geometry of the problem can be seen in the first image attached. The red region corresponds to the fluid and the blue region is the solid. The solid is hot and cold fluid flows through it, heating up in the process.

My problem is that, although the temperature and velocity fields seem to be ok, the pressure fields (p and p_rgh) do not change and remain at their initial value (i.e. 100 000 Pa).

In case you do not want to download my case (although it only takes 5 minutes) , as the most probable source of error (I think) is the boundary conditions for p and p_rgh in the fluid side, I'll post them here:

p:

internalField   uniform 100000;

boundaryField
{
    inlet
    {
        type            calculated;
        value           uniform 100000;
    }
    outlet
    {
        type            calculated;
        meanValue       100000;
        value           uniform 100000;
    }
    top
    {
        type            symmetryPlane;
        value           uniform 100000;
    }
    bottom
    {
        type            symmetryPlane;
        value           uniform 100000;
    }
    right
    {
        type            symmetryPlane;
        value           uniform 100000;
    }
    left
    {
        type            symmetryPlane;
        value           uniform 100000;
    }
    fluid_to_solid
    {
        type            calculated;
        value           uniform 100000;
    }
}

p_rgh:

internalField   uniform 100000;

boundaryField
{
    inlet
    {
        type            fixedMean;
        meanValue       100000;
        value           uniform 100000;
    }
    outlet
    {
        type            fixedFluxPressure;
        value           uniform 100000;
    }
    top
    {
        type            symmetryPlane;
        value           uniform 100000;
    }
    bottom
    {
        type            symmetryPlane;
        value           uniform 100000;
    }
    right
    {
        type            symmetryPlane;
        value           uniform 100000;
    }
    left
    {
        type            symmetryPlane;
        value           uniform 100000;
    }
    fluid_to_solid
    {
        type            fixedFluxPressure;
        value           uniform 100000;
    }
}

I have also tried changing the boundary contions above as well as fvSchemes and fvSolution based of the OpenFoam tutorials, the planeWall2D case and the oneFluidOneSolid2D case but I have not managed to solve it.

I would greatly appreciate any help on this topic