[aarvay]

I'm trying to understand how shadow walls are assigned when a mesh is imported into fluent from ICEM. My goal is to be able to model a fuel cell meshed with ICEM. My previous attempts at modeling using the workbench created meshes where shadow walls were generated only at the solid-liquid interfaces. As I understood the process, this was appropriate.

Now that I am making meshes with ICEM, the meshes that are imported into fluent seem to create shadow walls between everything and the solution isn't even coming close to converging. I'm quick to blame these new shadow walls since they are one very obvious difference between my two setups. However, I don't really understand shadow walls so my blame may be misplaced.

Do these shadow walls allow for gas transport through them? or do they behave like solid walls?