Sealed room air flow
 

Hi.
I am currently using Gambit to create a model of a closed room that contains a wind tunnel. The aim is to investigate the air flow and vortices generated by said wind tunnel (as the tunnel itself contains high levels of turbulence and we want to know to what degree the recirculation is contibuting).

The model itself is a simple 2D 'birds eye view' of the room and tunnel.

I am having difficulty setting up my boundary conditions as there are no traditional inlets and outlets (being a sealed room). I have tried pressure inlets, intake fans, and fans but cannot obtain any believable results.

All that is required is to generate a flow of air (at 8m/s) through the wind tunnel and to observe its behaviour as it recirculates around the room.

Any help would be much appreciated.

Regards,
Dave