哈尔滨工程大学学报2013，Vol.34Issue(3)：306-311,6.DOI:10.3969/j.issn.1006-7043.201202005
多级离心泵整机流场三维非稳态湍流压力脉动特性分析
Characteristic analysis of three-dimensional unsteady turbulent pressure fluctuation in whole flow field of multi-stage centrifugal pump
摘要
Abstract
In order to study the phenomenon and characteristics of pressure fluctuation induced by unsteady flow in a centrifugal pump, a three-dimensional finite element model of flow field was implemented by applying a multistage centrifugal pump as an object. The Fluent simulation technology was adopted, and the RNG k-ε turbulence model was applied to carry out unsteady numerical calculation in the whole flow field of centrifugal pump. By setting observation points, the pressure values of different observation points were obtained at each time step. In addition , Define FFT technique was employed to perform spectrum analysis of pressure fluctuation of observation points located at the impeller and volute. The results indicate that pressure fluctuation of impeller and volute is mainly concentrated in the frequency of impeller and its frequency multiplication, and the dynamic and static intervening between impeller and volute allows a larger effect to pressure fluctuation.关键词
离心泵/整机流场/压力脉动/频域分析Key words
centrifugal pump/ whole flow field/ pressure fluctuation/ frequency domain analysis分类
通用工业技术引用本文复制引用
率志君,张权,陈春来,陈奇,李玩幽,刘志刚..多级离心泵整机流场三维非稳态湍流压力脉动特性分析[J].哈尔滨工程大学学报,2013,34(3):306-311,6.基金项目
哈尔滨工程大学基本科研业务费专项基金资助项目(HEUCFZ1115). （HEUCFZ1115）
