displacement pump
 

Hello,

My simulation consists in a pipe linked to a displacement pump. Inside my pipe existing air and I am studying the behaviour of the interface related to a water film flowing inside the pipe. My problem is that I have a dispalcament pump so that the only thing I know is the volume removal but not the phase split. Does anyone know how to simulate such a boundary condition on my surface (without specified any condition related to each phase) with CFX 11?

Cheers.