水利水电科技进展2018，Vol.38Issue(2)：77-83,7.DOI:10.3880/j.issn.1006-7647.2018.02.013
城市输水泵站前池流态及整流措施
Flow patterns and rectification measures in forebays of urban water pumping station
摘要
Abstract
Due to the land limitation,layout of an urban water pumping station is generally cramped and reflux,whirlpool and other undesirable flow patterns can easily be produced in the forebay of a pumping station. In order to improve flow patterns,an urban water pumping station that inlets water at the bottom of a water culvert was taken as an example. Numerical simulation of the flow patterns based on RNG k-ε turbulence model in the forebay of the pumping station was carried out and rectification measures for urban water pumping stations of the same type were proposed. It is found that large scale circumfluence exists on both sides of the forebay of the pumping station and the flow distribution of the suction sump is unbalanced,which can cause a bad inlet condition for the pumps. Rectification measures that combined with splay shaped diversion piers and sills can effectively disperse the dense central mainstream, eliminate the large scale wall shedding on both sides of the forebay and homogenize the inflow of the suction sump. These measures can help to improve the inlet conditions for the pumps and to increase the reliability of the pump station operation.关键词
城市泵站/整流措施/流态/前池/数值模拟Key words
urban pumping station/rectification measures/flow pattern/forebay/numerical simulation分类
建筑与水利引用本文复制引用
冯建刚,钱向栋,张睿..城市输水泵站前池流态及整流措施[J].水利水电科技进展,2018,38(2):77-83,7.基金项目
国家自然科学基金(51779082) （51779082）
江苏省自然科学基金青年基金(BK20150808) （BK20150808）
