农业机械学报2011，Vol.42Issue(9)：79-84,78,7.
双吸离心泵叶片区压力脉动特性分析
Pressure Fluctuations of the Impeller in a Double-suction Centrifugal Pump
摘要
Abstract
The large eddy simulation method with sliding mesh technology was used to investigate unsteady flow characteristic in a double-suction centrifugal pump on different operating conditions. The unsteady flow in the impeller, especially on the blade surface was focused on. The results showed that the rotating frequency dominated the pressure fluctuations in the impeller at design and off-design conditions. The amplitude of the pressure fluctuation became higher when the flow rate was farer from the design flow rate, especially at Q/Qd = 0. 62 that the maximum amplitude occurred, nearly three times of design condition. At design condition, the maximum amplitude of pressure fluctuations happened on the blade leading edge, nearly 14% of average pressure, which was respectively 86% and 169% higher than the centers of the blade pressure side and suction side.关键词
双吸离心泵/叶片/压力脉动/大涡模拟Key words
Double-suction centrifugal pump/ Blade/ Pressure fluctuation/ Large eddy simulation分类
机械制造引用本文复制引用
瞿丽霞,王福军,丛国辉,姚志峰..双吸离心泵叶片区压力脉动特性分析[J].农业机械学报,2011,42(9):79-84,78,7.基金项目
中央高校基本科研业务费专项资金资助项目(2009TD12)和北京市教委科学研究与科研基地建设项目(20100909) （2009TD12）
