Numerical analysis of periodic flow unsteadiness in a single-blade centrifugal pump

作     者：PEI Ji YUAN ShouQi YUAN JianPing 

作者机构：Research Center of Fluid Machinery Engineering and TechnologyJiangsu University 

基　　金：supported by the National Outstanding Young Scientists Founds of China (Grant No. 50825902) Jiangsu Provincial Project for Innovative Postgraduates of China (Grant No.CX10B_262Z) 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2013年第56卷第1期

页      码：212-221页

摘      要：In this paper,the CFD simulation and new flow unsteadiness analysis for a single-blade centrifugal pump with whole flow passage were carried *** periodic flow unsteadiness has been quantitatively investigated in detail by defining unsteady intensity and turbulence intensity in both rotor and volute domains under design condition Q=33 L s *** results show that the distributions of flow unsteadiness are the functions of impeller rotating angle and have complex unsteady *** obvious T u fluctuations can be also observed for different impeller *** addition,time-averaged unsteady intensity and time-averaged turbulence intensity were calculated by averaging the results of each mesh node for entire impeller revolution period to evaluate the strength distributions of flow unsteadiness directly and *** accumulative results of an impeller revolution can directly show the positions and strength of the flow unsteadiness and turbulence intensity in both rotor and stator domains which can be an important aspect to be considered in the single-blade pump optimum design procedure for obtaining more stable inner flow of the pump and decreasing flow-induced vibration and *** flow unsteadiness in the side chamber cannot be neglected for an accurate prediction of the inner flow of the pump,and the optimizing design procedure for a single-blade pump impeller will not be accurate using CFD tool if the unsteady flow phenomenon in the side chamber is not considered.

主 题 词：numerical analysis flow unsteadiness turbulence intensity sewage centrifugal pump 

学科分类：0810[工学-土木类] 080704[080704] 08[工学] 0807[工学-电子信息类] 0805[工学-能源动力学] 0702[理学-物理学类] 0812[工学-测绘类] 

核心收录：

D　O　I：10.1007/s11431-012-5044-x

馆 藏 号：203611765...