Hello,

as a part of a collage project I'm trying to run a flow simulation for a hydrotechnical structure. The model consist of pipe structure, at the exit of which there is a outer structure (stilling). The point is to examine the water behaviour after the outlet of the pipe. At this point I've modeled the geometry but I'm struggling with the flow analysis. Is there a way to combine internal and external conditions in one analysis, as the main goal is to examine the characteristics of the flow in this kind of situation.

Any help will be greatly appreciated,

Thank you

the program has no free surface capability and cannot model a hydraulic jump in anyway shape or form. The best you can hope for is about what you did below. There will be energy losses but for it to be any use you would need to know what faction would be in a hydraulic jump as this would not accounted for.