[boffin5]

Hi,

I am working with a heat exchanger in a duct; the HX is modelled as a porous zone. There are two attached images: The first image shows a single mesh where the cell shape changes at the HX/air interface. The second one shows the HX superimposed on the air domain, as it would be for a chtMultiRegionFoam simulation. Two questions:

1.) The first image is intended to correspond to a single region buoyantSimpleFoam case where the HX porous zone is defined with topoSet. The nodes at the interface do not match. Is this a problem? Actually, I am in the process of trying to create this kind of mesh, and may not be able to do it. But the question still applies.

2.) The second image shows the HX mesh region superimposed on the air mesh region, as applies to a chtMultiRegionFoam case. The mesh cells do not directly overlap. Is this a problem?

I am hoping for answers, and depending on what they are, I may have wasted a lot of time!

[wkernkamp]

Not an expert on this. However, I do know that AMI (sliding) boundaries do not have to match.