Create Thin Surface in Mesh2CAD
 

It semms to me that Mesh2CAD is very friendly. I created two Bodys with one contained the other completely. Then I created several surface parts which are outer faces of the contained Body. When I imported the meshes into CFX-Pre, the surface parts become the only 2D-region for the contained Body. In other words, I can not assign any boundary condition seperatedly to the surfaces of the contained Body. So anybody can give me some hints?

Thanks,

Jeniffer