THREE-DIMENSIONAL COUPLED IMPELLER-VOLUTE SIMULATION OF FLOW IN CENTRIFUGAL PUMP AND PERFORMANCE PREDICTION

作     者：ZHAO Binjuan YUAN Shouqi LlU Houlin TAN Minggao 

作者机构：School of Energy and Power Engineering Jiangsu University Zhenjiang 212013 China Research Center of Fluid Machinery Engineering and Technology Jiangsu University Zhenjiang 212013 China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2006年第19卷第1期

页      面：59-62页

核心收录：

学科分类：080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：This project is supported by Provincial Natural Science Foundation of Jiangsu  China(No.BK2004406)Provincial Innovation Foundation for Graduate Students of Jiangsu  China(No.1223000053 

主　　题：Centrifugal pump Numerical simulation Performance prediction Secondary flow 

摘      要：A three-dimensional turbulent flow through an entire centrifugal pump is simulated using k-ε turbulence model modified by rotation and curvature, SIMPLEC method and body-fitted coordinate. The velocity and pressure fields are obtained for the pump under various working conditions, which is used to predict the head and hydraulic efficiency of the pump, and the results correspond well with the measured values. The calculation results indicate that the pressure is higher on the pressure side than that on the suction side of the blade; The relative velocity on the suction side gradually decreases from the impeller inlet to the outlet, while increases on the pressure side, it finally results in the lower relative velocity on the suction side and the higher one on the pressure side at the impeller outlet; The impeller flow field is asymmetric, i.e. the velocity and pressure fields arc totally different among all channels in the impeller; In the volute, the static pressure gradually increases with the flow route, and a large pressure gratitude occurs in the tongue; Secondary flow exists in the rear part of the spiral.