the boundary condition of permeable wall

lisa

Hello everyone, I am a graduate student in Canada and I am doing my research in simulating the air flow patterns and heat transfer in a 13-floor building using FLUENT. The calculation domain is the inside of the whole building and the calculate domain¡¯s boundary is the walls(here we can call them wall-A so that we can distinguish them from the other wall-B inside the domain). I have got the pressure distribution from FLUENT for all the wall-A and wall-B. And I have got some experimental data of pressure distributions from the wind tunnel lab for the outside walls-A (outside of the calculate domain). For wall-A, we want to define them as permeable wall and use the pressure difference to drive the air flow through the wall-A. I don¡¯t think FLUENT can solve this problem unless we enlarge the calculation main to the outside of the building and define these wall as porous wall. I want to hear your guy¡¯s ideas about this problem. Maybe I am wrong. Thanks a lot. Lisa