在流体预旋试验研究的基础上，对离心泵系统的流场作了全面研究，用流体力学理论对研究成果进行分析，从而得到了离心泵系统的流体力学特性。本文论点对其他的叶片式流体机械系统，亦有一定的参考价值 Based on the experimental study of fluid pre-rotation, the flow field of the centrifugal pump system is comprehensively studied. The fluid mechanics theory is used to analyze the research results, and the hydrodynamic characteristics of the centrifugal pump system are obtained. This article has some reference value to other vane fluid machinery systems