离心泵叶轮内变工况三维湍流数值模拟  

Simulation of 3-D Turbulent Flow inside Centrifugal Pump Impellers at Varying Conditions

作　　者：李龙[1] 王泽[1] 徐峰[1] 韩丹[1] 

机构地区：[1]河海大学环境科学与工程学院

出　　处：《农业机械学报》2004年第6期72-74,89,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：河海大学科技基金资助项目 (项目编号 :2 0 0 2 40 95 43 )

摘　　要：采用工程上广泛使用的标准 kε两方程湍流模型 ,对离心泵最佳工况和大流量工况、小流量工况进行了叶轮内部流动的数值模拟 ,对 3种工况下叶轮内的相对流动、径向流动及切向流动进行了分析 ,探讨了轴向旋涡的特征、叶片流道的挟持约束作用、叶片流道内的压力分布与流量的关系等流动特性。This paper is to simulate the flow inside centrifugal pump impellers at the conditions of the optimum, the small and the large flows by using the k-ε, 3-D turbulent model. The various component velocities of flow were analyzed. The characteristic of an axial vortex, the interferences of flows, and the relationships between pressure distribution and flowrate inside the impeller space were simulated. The results obtained in this work are helpful in impeller design and the understanding of flow characteristic inside impellers.

关 键 词：离心泵 叶轮 变工况 湍流 数值模拟 

分 类 号：TH311[机械工程—机械制造及自动化]