旋流泵, 高低叶片, 数值模拟, 试验

A 3-D model of an internal flow channel was constructed. Using the SIMPLEC algorithm, which was based on Reynolds time-averaged equations and two-equation turbulent flow model, the 3-D incompressible internal turbulent flow field of vortex pump was simulated numerically and the distribution of total pressure in the pump was obtained. Through comparion of the simulated results of three kind blades that were different in height, it is found that the high-low blade can improve the performance of vortex pump.The results show that the experiment has proved the correctness of simulation result. The high-low blade can reduce hydraulic loss and increase the head and efficiency. The hydraulic performance is the best when two blades of symmetric distribution are high than others and efficiency is enhanced nearly 3%.