[aicha]

Hi all,
I want to study the flow in a rectangular porous media by using Fluent. The fluid flowing through it is the air. The inlet boundary condition is "velocity inlet" (V=0.1m/s) and the outlet boundary condition is "outflow". I have defined the porosity as 35% and viscous resistance as R=3695335.2 (1/m2).
But the solution does not converge. When I consider the flow without the porous media, the solution converge, but when I enable porous zone the solution does not converge. I don't understand where is the problem. Please help me.