水利学报Issue(2)：248-254,7.DOI:10.13243/j.cnki.slxb.2014.02.016
离心泵蜗壳进口边对叶轮径向力影响的数值模拟
Numerical simulation of radial force on impeller in a centrifugal pump with different volute inlet edges
摘要
Abstract
Keeping constant of the current section of a volute and its base diameter, and changing the width of its inlet edge, this paper presents the unsteady numerical simulation through the whole flow pas-sage of centrifugal pump with different volute inlet edges to match the same impeller by using SST turbu-lent model. The external characteristic of centrifugal pump and the radial force characteristic were obtained from the numerical simulation. The results show that appropriate changing of the volute inlet edges has lit-tle influence on head and efficiency of the centrifugal pump;the radial force of impeller changed with each passing minute in magnitude and direction under the same condition. Because of the influence of the rotor-stator interaction of impeller and volute, the radial force of impeller and volute presents the distribu-tion of hexagonal star and ellipse, respectively. The smaller the volute inlet edge, the lesser the radial force on impeller and volute, which shows that decreasing volute inlet edge may improve the radial force on centrifugal pump.关键词
离心泵/蜗壳/数值模拟/径向力/蜗壳进口边Key words
centrifugal pump/volute/numerical simulation/radial force/volute inlet edge分类
机械制造引用本文复制引用
江伟,李国君,张新盛,华栋..离心泵蜗壳进口边对叶轮径向力影响的数值模拟[J].水利学报,2014,(2):248-254,7.基金项目
国家自然科学基金项目 （）
