ANSYS problem in solving fluid fluid interaction

Fayyaz

please help me , can i use simple ansys 10.0 Flotran for simulating free stream flow over a plate with a angled hole in the plate in which same fluid is flowing with different properties.. for film cooling of the plate...i have only option to work in flotran cfd.... could i try the two different flows as two materials or if i use single type of material then it is posing problems saying soluition is diverging. i have tried all the methods...pls help me if some one has worked on such a problem