农业机械学报2012，Vol.43Issue(5)：79-83,5.DOI:10.6041/j.issn.1000-1298.2012.05.014
超低比转数离心泵叶轮切割的三维流场数值模拟
Impeller Trim of Super-low Specific Speed Centrifugal Pump Based on Numerical Simulation of 3D Flow Field
摘要
Abstract
In order to research the relationship between the size of impeller cutting of super-low specific speed centrifugal pump and the changing pump performance, centrifugal pump IS 50 - 32 - 250 was chosen as the research object. By using commercial software Fluent to conduct numerical simulation of three-dimensional flow field, the distributions of pressure and velocity in the impellers and pump bodies under different impeller diameters were calculated. By comparison of calculated results of different diameters, the influence of the size of impeller cutting on pump performance was obtained: when the size of impeller cutting was 0. 03, the efficiency raised suddenly; when the size of impeller cutting was 0. 09, the efficiency decreased slightly; when the size of impeller cutting was 0. 15, the efficiency sudden dropped dramatically. The size of impeller cutting could not be bigger than 0. 15 in the practical application, otherwise, the performance of pump dropped dramatically.关键词
离心泵/超低比转数/叶轮切割/三维流场/数值模拟Key words
Centrifugal Pump/ Super-low specific speed/ Impeller trim/ Three-dimensional flow field/ Numerical simulation分类
机械制造引用本文复制引用
王洋,刘洁琼..超低比转数离心泵叶轮切割的三维流场数值模拟[J].农业机械学报,2012,43(5):79-83,5.基金项目
国家标准化管理委员会项目(2007A4308-T-604)和江苏省科技服务业计划资助项目(BM2008375) （2007A4308-T-604）
