Abstract: This paper presents a theoretical method for calculating inner flow field in centrifugal impeller with splitter blades and investigates the interactions between long blade and short blade. The vortices are distributed on the long and short blade to simulate the effects on flow.A systematical study of distribution and number of vortices is conducted.It is found that the short blade has significant influence on the field of velocity and pressure, and it can prevent effectively flow from separating and evolution of separate flow.

摘要： 应用奇点分布法对长短叶片离心泵叶轮内部流场及长、短叶片的相互干扰进行了数值研究.在长、短叶片上分别布置强度不等的点涡来模拟叶片对流场的作用，系统地研究了点涡的分布及数目.结果表明：短叶片对整个流场的速度及压力分布有较大的影响，能有效地防止脱流的产生与发展.