[Nico A.]

Hello FOAMers,

I actually want to simulate a cht problem with many different regions in OpenFOAM 2.2.0. But when I simulated a little test case, there occur differences in heat conduction from OF 2.1.1 to 2.2.0. You can therefore have a look at the attached picture.

I took the flange case out of the laplacianFoam tutorial. Then I adjusted the material properties for cp, rho and kappa in this way that I should get the same results for laplacianFoam solver and chtMultiRefionFoam solver. (In laplacianFoam we have just DT, which can be calculated as: DT = kappa/(cp*rho) )

The results for laplacianFoam and cht - OF211 simulation are similar. Unfortunately the cht - OF220 simulation differs from that.

So my question is, does anyone know what the problem is in this case? Is it maybe a bug of the new version?

Best regards, Nico