【摘要】 通过F luent前处理软件G am b it对MD 40-6.3多级清水离心泵的导叶进行三维建模,生成网格,利用F luent对设计工况下的三维紊流场进行了计算,得知:速度流经扩散段逐渐减小,压力逐渐增大,从反导叶出口的速度值可以看出反导叶出口的速度大于下级叶轮进口速度,且出口处产生了旋涡,并且在压力图上可以看到在出口区产生了一个低压区等流动特征.以此证明了此反导叶设计的不合理,为改进其线型、轴间震度及叶片厚度的变化规律提供了依据.更多还原

【Abstract】 Three-dimensional modeling and meshing of a diffuser through a centrifugal pump stage have been developed,and then steady state computations of the flow in many working conditions have been done and the pressure and velocity distribution in the impeller are obtained.Some opinions are given for the improvement of designing the reverse diffuser.更多还原