Reply To: No Flow Through Inner Domain — wind turbine

[Federico]

So the best way to avoid this confusion is simply to display your boundaries one at a time in Fluent and inspect them in the graphics window. This way you would have seen right away what each of you boundaries look like. Something like this:

In your case, you created the mesh in Ansys Meshing and brought it to Fluent. First, I would recommend using Fluent Meshing with Watertight Geometry workflow, as it has a task that explicitly asks you if you want to make Fluid-Fluid interfaces of type "internal". In your case, as you bring the mesh from Ansys Meshing, Fluent has some interpretation to do for any un-named zones and assign them a boundary type. I'm assuming that you named the cell zones but not the faces explicitly. Fluent then just assigned the remaining faces as type wall, which caused this confusion.

I hope this helps!