please help! which BC setting should use when simulating windows?
 

hello!

I am working on a project for air flow passing through an window of a room.

The software I am using is Gambit & Fluent.

I would like to set the Boundary Condition at the window as 'open', which is the air can both go in the room and exit the room.

Can anyone give me some suggestions about how should I do it?
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