unsteady temperature distribution over coupled bc in MultiRegionCase
 

hi,

i did some working on the chtMultiRegion solver. I checked for the temperature distribution along the y-axis in the tutorial in chtMultiRegionSimpleFoam and i predict to see a straight line over the domain because the heat conductivity is the same for both domains.
But what paraview gives me is smth. like the attached. It´s wiggled @ the interface..
So. Is this related to paraview messing up the values ?
I did not change the setup or the bc from the tutorial--> I think i just ran into a very basic mistake and i hope some wiser foamer could help me out a bit.

neewbie