Boundary conditions for tet mesh
 

Hi,

I am trying to use OF to solve the internal flow in an arbitrarily shaped room. There are objects in side the room. Except for a few ventilation holes, all the surfaces hold a wall patch boundary condition. Is it possible to define the boundaries using foam? I have only come across blockMesh where I can specify the boundary patches. But I don't think it is possible to use blockMesh for my case as it is a tet mesh.

What does cellSet and faceSet do in this regard?

Thank you