To whom it may concern,

I am trying to run a Flow Simulation on a Smokehouse. The trick is that it is completely sealed and simply recycles air by means of a centrifugal fan. I am not to concerned about the rotating reference of the fan itself as I have the specs on hand, but how do I set this kind of study up? I assume it would be considered internal flow, but keep getting an error for the inlet face (fan) and there is no outlet. Is this even possible to do?

I have included a sketch of the problem in its simplest for. A sealed container with a fan to circulate air. No air is added or removed during operation, so how would I define the inlets and outlets?

Thank you in advance!