采用美国TSI公司生产的最新三维粒子成像速度场仪（PIV）对轴流式水泵转轮内的流场进行激光测量：研究水泵转轮的水动力特性。通过测量出转轮内及其进、出口的流速场，结合转轮内流动的仿真计算，分析探求最佳的水泵转轮参数；改进和完善已有的水泵能量特性和改善汽蚀特性产生重大的经济效益和社会效益。...

PIV was firstly applied to the easurements of the flow fields of the shroulded impeller in a centrifugal pump. The actural flow field and the exact postion of low velocity were brought out. At the same time, the inlet flow of axis-pump was measured. Through numerical simution, the flow was computed. The measurement and computation results can help people to improve level of the pump design.