[amir1372s]

Hi
I want to simulate a complex pipe line that attached to a 4 stroke engine intake (and another pipe line to engine exhust). i choose the pressure inlet in the inlet of first pipe line but i dont know which boundary condition can simulate engine effect on the pipe line better.
actually i dont want to simulate the engine but i want to use a boundary condition similar to engine (engine in take an exhaust desperately) . a simple one is velocity outlet (or inlet ) but i need something more complex that can simulate engine effects on pipe line better.
assume that i can define not uniform or time dependent or any other complex boundary condition
thank you