排灌机械工程学报Issue(1)：20-25,6.DOI:10.3969/j.issn.1674-8530.14.0057
离心泵叶轮出口宽度对泵腔内压力脉动分布的影响
Effects of impeller outlet width on pressure pulsation in two side chambers of centrifugal pump
摘要
Abstract
The effects of impeller outlet width on pressure pulsation in two side chambers of a centrifu-gal pump are studied based on the mutual authentication between experiment and numerical simula-tion.The pump performance curves are measured and predicted with CFD simulation at different im-peller outlet widths,the fluid static pressure and pressure pulsation as well as pulsation amplitude dis-tributions in both side chambers are obtained and analyzed comparatively across the different width ca-ses.The predicted performance curves are in good agreement with the experimental data.It is turned out that the static pressure and pressure pulsation in the front side chamber ascend with the enlarging outlet width and reducing radius.However,there is no significant change in them with variable outlet width and radius in the rear side chamber.Based on a trade-off between pump performance and pres-sure pulsation in the chambers and volute,the ratio of the impeller outlet width to the impeller diame-ter should be less than 0.06 at the specific speed ns =97.In order to make the pressure pulsations ef-fectively decayed in the side chambers,the best ratio of the impeller outlet width to the gap of the front side chamber should be about 1.81.The results can be used to guide the optimal design of the impeller of centrifugal pumps.关键词
离心泵/压力脉动/叶片通过频率/叶轮出口宽度Key words
centrifugal pump/pressure pulsation/blade passing frequency/impeller outlet width分类
农业科技引用本文复制引用
戴菡葳,刘厚林,丁剑,谈明高,王勇..离心泵叶轮出口宽度对泵腔内压力脉动分布的影响[J].排灌机械工程学报,2015,(1):20-25,6.基金项目
国家自然科学基金资助项目（51109095，51179075，51309120）；“十二五”国家科技支撑计划项目（2011BAF14B03，2013BAF01B02）；江苏高校优势学科建设工程项目 （）
