Boundary Condition
 

Hello,

I am modeling air flow in an apartment. flow comes in through an inlet section and goes out through an outlet section. I am prescribing fixed velocity at the inlet. What shoud be the boundary condition at the outlet - PRESSURE or MASS FLOW BOUNDARY ?

Jay

Re: Boundary Condition
 

You could use the standard zero gage pressure boundary condition and zero normal velocity gradient condition at the outlet.