How to simulate draining with impesFOAM
 

Good day,



i'm relatively new to CFD. Currently i'm trying to simulate the draining of porous material under gravity. The material has a defined Saturation Sb wich should desaturate under the weight of phase b through a defined opening. The used Solver is impesFOAM to simulate two phase flow. Phase a being air and Phase b being water.



I'm very unsure in terms of the boundary conditions for p, Ua, Ub and Sb.


I hope you can help me.