Boundary for interFoam: simulation that air goes out but not the water inside
 

Hi!

I need to do a simulation that air goes out but not the water inside. How do I do that? I'm using interFoam, there is some way to do this without changing my mesh?

Hi

Can you give more details?

Depending on your case, you can try setting water velocity boundary condition at the outlet to fixedValue (0,0,0).