泵站装置蜗形进水池流态与水力性能分析  

Analyzing flow patterns and hydraulic performance of volute intake sump for pump station

作　　者：刘厚林[1] 周孝华[1] 王凯[1] 王文博[1] 

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏镇江212013

出　　处：《华中科技大学学报（自然科学版）》2013年第11期12-16,共5页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(51079062;51179075;51109095;51209105);国家科技支撑计划资助项目(2011BAF14B03;2013BAK06B02);江苏省自然科学基金资助项目(BY2011140);江苏省科技支撑计划(工业)资助项目(BE2012129;BE2012131)

摘　　要：基于定常不可压流体控制方程,应用SIMPLEC算法,采用不同湍流模型对泵站装置全流道进行数值计算,对进水池内各截面流态进行分析,同时分析喇叭管内各断面轴向速度分布均匀度与速度加权平均角度.结果表明:标准k-ε湍流模型能更准确地预测泵站模型的特性;在进水池各截面上,绝对速度随流量增加而增加,且呈现出'中间大,两边小'的分布;在1-1断面轴向速度分布均匀度最小值为64.41%;随流量的增加,速度加权平均角度先增加后减少.Based on the incompressible fluid control equation, a pumping station with the SIMPLEC algorithm was calculated numerically. The flow character on each section of the intake sump was ana- lyzed, as well as the axial velocity distribution uniformity and the velocity weighted average angle of each section of the bell of the pump. The results show that standard k-~ turbulence can predict per- formance of the pumping station model accurately. With the increase of flow rate, the distribution ab- solute velocity increases, showing ＂the middle both sides＂ in each cross section of intake sump. The minimum value of the axial velocity distribution uniformity is 64.41~ in the 1-1 section. With the in- crease of flow rate, the velocity weighted average angle first increases and then decreases.

关 键 词：泵站 蜗形进水池 进水喇叭管 水力性能 数值模拟 

分 类 号：TH311[机械工程—机械制造及自动化]