泵站前池单排方柱整流措施数值模拟  

Numerical simulation of flow pattern in forebay of pump station with single row of square columns

作　　者：夏臣智 成立 赵国锋 于磊 吴牧天 徐文涛 

机构地区：[1]扬州大学水利与能源动力工程学院,江苏扬州225000

出　　处：《水利水电科技进展》2017年第4期53-58,共6页Advances in Science and Technology of Water Resources

基　　金：国家科技支撑计划(2015BAD201301-02);江苏省研究生培养创新工程(KYLX16-1395);江苏省大学生学术科技创新基金(201611117030Z)

摘　　要：为改善泵站前池内水流流态,基于Fluent软件,运用RNG k-ε模型对加单排方柱的正向进水泵站前池流态进行数值模拟,分析单排方柱的几何参数对前池流态改善的影响。结果表明:单排方柱具有分流效果,流经单排方柱的水流会向前池两侧分散,在单排方柱的后方形成漩涡。无整流措施时,泵站前池流态紊乱;通过在前池加设单排方柱可显著改善流态;单排方柱宜布置在前池前中部,不宜布置在两侧回流区内;方柱宽度越小,分流作用越小,行近流速分布越不均匀。In order to improve the flow pattern in the foreway of a pump station,the RNG k-ε turbulence model based on the Fluent software was used to simulate the flow pattern in the front inflow forebay of a pump station with a single row of square columns,and the effect of geometric parameters of these square columns on the flow pattern in the foreway was analyzed. The results show that a single row of square columns leads to flow separation,the water flowing through the square columns disperses to the two sides of the foreway, and vortices form behind the square columns. Without rectification measures,the flow pattern is disorderly in the forebay,but it is significantly improved when a single row of square columns are arranged in the forebay. These square columns should be arranged in the forepart and middle of the forebay,not in the backflow zone at the two sides. The flow separation effect decreases and the approach velocity is more non-uniform with the decrease of the width of square columns.

关 键 词：泵站 前池 整流措施 方柱 流态 数值模拟 

分 类 号：TV135[水利工程—水力学及河流动力学] TV675