Now i want to simulate a gas circulation system which is a vessel, there is a separated shell in the vessel, on the top and bottom there has inlet and outlet ports. At back side of vessel there is a axial flow fan, I want to simulate gas to go into top inlet port and go out from bottom port by the fan.In the vessel, there has 12 bar's gas circulation gas. Then check gas speed and uniformity in the shell. Is it possible to realize it by solidworks's flow simulation?

I attach a picture of my model.

I choose a fan from solidworks, then run the project. But the result looks not correct, there is no gas trace from bottom port.