Problems with multiphase modeling
 

Hi everybody, I got the following trouble modeling a two-phase flow with multiphase modeling: I'm simulating a two-phase flow air-air flowing through a porous media. Just the first of two phases has to pass through porous media so I set porous media coefficient very high for the second. The problem is that second phase seems to disappear before hitting the porous media, and analyzing flux reports I understand that the second phase mass flow was converted in the first phase.
Have anybody every had this kind of problem?

Thanks