CFD Simulation and Optimization for Lateral Diversion and Intake Pumping Stations

The flow analysis of the lateral diversion and intake pumping stations is based on realizable k-ɛ turbulent model and SIMPLEC algorithm. The numerical simulation result coinciding to theoretical analysis result shows that the inlet flow of the pumping station has characteristics of the bend channel flow. According to the inlet flow characteristics, the guide splitter is chosen as the optimization method for this kind of pumping stations. The numerical simulations of different guide splitter layouts are analyzed by inlet section momentum distribution of pumping station and flow distribution uniformity of pump sumps. The results show that the guide splitter has significant adjustment of the momentum distribution of the diversion channel and the velocity distribution of inlet section is influenced by the momentum distribution uniformity of the diversion channel. The guide splitter with appropriate size is valid in reducing the effect of the circulation flow and making flow in normal distribution quickly after flow shift direction which further can improve the flow distribution uniformity of sumps.