You can use split surface option to split the face and select one face and specify the flow, and next face and specify the another flow. Else update your model. Its very easy to give suggestion/solution.
A D Kumar
EGS Computers India Pvt Ltd
Yes, I have done that already by giving separate boundary condition. But how do i tell solidworks, which fluid is going through which cross section ?
Sorry I didn't notice concentration option in boundary condition. Got it.