Rob
Ansys Employee

It's not clear from the above whether you're looking at 2d or 3d, posting images will help. In general for CFD we only include solids if heat transfer is of interest, otherwise we're only worried about the fluid parts. 

Note, staff are not permitted to open/download files and attachments, we can only comment on what we can see in the posts. However, I'd also suggest going through geometry, meshing and solver tutorials to see how the process works: you may have most it right but be missing a step somewhere.