农业工程学报2011，Vol.27Issue(10)：44-49,6.DOI:10.3969/j.issn.1002-6819.2011.10.008
深井离心泵内部非定常流动的压力脉动特性分析
Analysis on pressure fluctuation of unsteady flow in deep-well centrifugal pump
摘要
Abstract
In order fo analysis the pressure fluctuation of unsteady flow in the deep-well centrifugal pump, the unsteady flow field of a deep-well centrifugal pump was simulated with FLUENT software based on sliding mesh, the standard k-e turbulence model, and the SIMPLEC arithmetic to investigate the pressure fluctuation of different locations. With the Fast Fourier Transform (FFT) analysis, the pressure fluctuation and frequency fluctuation are analyzed under rated flow conditions. The numerical results show that the grids number has obvious effect on the numerical results, and the pressure fluctuates generated between the impeller outlet and the diffuser inlet. The pressure pulsation period associated with the number of impeller blades, and blade passage frequency is the main factor of pressure fluctuation. The results can provide a basis to improve the pump body structure and further improve the pump working reliability.关键词
离心泵/数值分析/非定常/压力脉动/CFDKey words
centrifugal pump/ numerical analysis/ unsteady flow/ pressure fluctuation/ CFD分类
农业科技引用本文复制引用
周岭,施卫东,陆伟刚,李辉,裴冰..深井离心泵内部非定常流动的压力脉动特性分析[J].农业工程学报,2011,27(10):44-49,6.基金项目
国家科技人员服务企业行动项目(2009GJC30002) （2009GJC30002）
浙江省重大科技专项重大工业项目(2010C01032)和江苏省高等学校优秀科技创新团队计划(苏教科(2009)10号) （2010C01032）
