Boundary condition for internal "wall"
 

Hi,

I am a new user of Openfoam and I tried to realize a chtMultiRegionSimpleFoam case. It is a solid encircled by air with 4 regions:
-Solid
- Air1, Air2 and Air3

Between Air1/Air2 and Air2/Air3 I don't know what is the boundary condition for the velocity to illustrate the internal condition (Air1_to_Air2 and Air2_to_Air3).

Someone can help me ?

Thank you very much,
Lucie

Hi,

as far as I know it is problematic to work with fluid-to-fluid interfaces with chtMultiRegionFoam.
One solution could be to create only one fluid region. If you can joint all the Air regions, you won't have that problem.

Hi,

Thanks. I tried and it works with only one fluid region !