Three-Dimensional Numerical Simulation of Flow in the Siphon Outlet Passages Based upon RNG k-ε Turbulent Model

The complexly designed geometry of siphon outlet passages which are widely used in large pumping stations,gives rise to uneven flow distribution in the passages,even some problems,for instance,swirl,reflux and flow separation.To discover the flow attributes,a three-dimensional turbulent flow simulation was conducted with regard to the flow in the passages by applying a RNG k-e model.More important,the result of the numerical simulation proved to be correct via model tests.