How to use the output (solution) of one boundary in a model as the input (initiation condition) of the other boundary in another model

Hi, everybody!

I have a question about the boundary settings in the CFD module. I built an open channel and calculated the fully developed turbulent flow. Now I want to build another channel, which has the same cross section with the first one. The two channels are in fact connected, but I build the second one because it has an obstacle in it. And I want to use the solution at the outlet boundary in the first model as the input at the inlet boundary in the second model. Do anyone know how can I accomplish this? Any comments are welcomed and appreciated. Thank you!