it is hard to know what's up with no BC's being obvious. You might want to make more of an effort to explain what's going on and you may get more of a response.
Hi Peter, as Bill mentioned, can you elaborate on the setup?
You've got an internal analysis.
What are the outside wall conditions?
The only thing driving the flow is the internal fan and I think it is defined in the middle of your screenshot.
What flow rates/velocities does the fan show on each side? What temperatures?
Do you have heating defined on the fan outlet?
What are you expecting from a results standpoint?