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fluid-fluid-BC in chtMultiRegionFoam/chtMultiRegionSimpleFoam

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Old   April 27, 2012, 08:21
Default fluid-fluid-BC in chtMultiRegionFoam/chtMultiRegionSimpleFoam
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Bernhard Linseisen
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Hi there!
At the moment I am trying to develop a solver based on chtMultiRegionFoam that allows to define two different fluid zones instead of one solid and one fluid zone.

While setting up the zones is not a problem any more, I have problems with the BCs between the fluids. The standard BCs such as zeroGradient do not work.
I guess I need something like the BC for heat in chtMultiRegionFoam, which allows transfer from one region to another for other quantities as well, mass transfer probably being the crucial one.

1) Does anyone have any idea how this could be established? Is there maybe a boundary condition already that allows for such things?

2) Does anyone know where the BC for heat in chtMultiRegionFoam is defined (path to the source-code) in the recent version of OpenFOAM? Then I could find and try changing this particular BC to what I need.

3) Does anyone know how to specifically set an "internal" boundary-condition as usually it is done automatically? Just something like that probably would do the trick already...

Thanks for any answers in advance!
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