5 . the numerical simulation of the axial vortex movement in the inlet side of the pump system with the method of discrete vortex provided a new way for hydromechanical characteristics of a pump system 用离散涡方法计算涡系位置的演化模拟泵入口侧涡量场的轴向涡流运动，为研究泵系统入流侧涡量场特性提供了一种定量研究方法。
2.
The transient continuously distributive vortex can be replaced by a number of discrete point vortexes . the trajectory of vortex movement was computed with the method of discrete vortex and the axial vortex movement in the inlet side of the pump system was simulated 将泵入口侧连续分布的涡量场离散成有限数目的离散涡，用离散涡方法计算涡系位置的演化，模拟泵入口涡量场的轴向涡流运动。
