Weak Coupling of Two Fluid Fields/ Regions
 

Dear All,

for my Simulation I am in need of something like a Fluid-Fluid Coupling Condition for the chtMultiRegionFOAM solver:confused:. However scanning the tutorial gives me some Ideas, but no solutions at all. Which of the following is the fastest way to paradise?

1. Using something like
   bottomAir_to_rightSolid
   {
   type directMappedWall;
   nFaces 0;
   startFace 1070;
   sampleMode nearestPatchFace;
   sampleRegion rightSolid;
   samplePatch rightSolid_to_bottomAir;
   offset (0 0 0);
   }
   but with directMapped?? Which startFace do I have to use?
2. Creating a new BC like solidWallMixedTemperatureCoupled?? (I Know this is not that simple, but I hoppe I can handle this...
3. Using something like a processor or coupled BC ?

It might be highly impolite, but I would also appreciate some examples for these BC's. I can't find them in the Forum.

Thanks in advance!!

Tobias