Numerical simulation of hydraulic characteristics in the pumping station's rectangle intake sump and volute intake sump

The intake sump is an important hydraulic structure in pumping system.The sump shape has a direct influence on the inlet flow pattern and efficiency of a pumping system.In this paper,velocity uniformity near the pump and discharge are used to estimate the properties of pumping system.By using CFD method,some cases of rectangle intake sump(including with and without baffle plate near free surface) and volute intake sump are simulated.Different hydraulic characteristics are shown in different sump shape.It is shown that sump with baffle plate is superior to the without one,and volute intake sump is superior to rectangle intake sump.These results have reference value in the designing of intake sump.