I am trying to use a geometry/mesh created in ICEM CFD for a simulation in Fluent.

The geometry is basically a room, and one of the surfaces is supposed to have natural convection. I haven't figured out how to create an "two-sided wall" surface in ICEM so that Fluent will create a shadow wall for this wall when loading the mesh.

Regards, Reine Granström

If this is an internal wall - you need to make sure the surface is preserved in the ICEM CFD mesh. When you read the mesh into Fluent - it will see the surface mesh has 3D elements on both sides - and it will create the shadow.

For Tetra mesh - make sure you flag the surface as an 'Internal Surface' in the mesh parameters (bring up Surface Parameters panel to see the check box for 'Internal Surface').

For Hexa mesh - make sure you project the block faces to the Surface Part so the surface mesh is created correctly.

Myron, thanks for your reply.

However, it is not an internal wall.

Basically it is a room with one wall that is separated in two sections. One section represents a window and should have a fixed temperature with natural convection. The other part is the remaining part of the wall and it should have a constant heat flux.

At first hand, I would like to create a hexa mesh.

I guess my approach should be something simular to what you described, but I'm still not really sure how to do it. I am familiar to the approach you described; I have created similar meshes in Gambit for internal walls. Should I create another surface on top of the volume surface or something like that? Or do I have to have two volumes on each side of a surface for a shadow wall to be created?

I appreciate your reply, Regards, Reine