泵站正向大扩散角前池八字形导流墩整流研究  

Research on Rectification of Figure-eight Diversion Pier in Forward Forebay of Pumping Station with a Large Diffusion Angle

作　　者：徐波 吕和品 谭超 夏辉[3] XU bo;LV He-pin;TAN Chao;XIA Hui(College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225009,China;Xuzhou Branch of The Eastern Route of South-to-North Water Diversion Project Jiangsu Water Source Co.,Ltd.,Xuzhou 221200,China;Jiangsu Surveying and Design Institute of Water Resources Co.,Ltd.,Yangzhou 225127,China)

机构地区：[1]扬州大学水利科学与工程学院,江苏扬州225009 [2]南水北调东线江苏水源有限责任公司徐州分公司,江苏徐州221200 [3]江苏省水利勘测设计研究院有限公司,江苏扬州225127

出　　处：《水电能源科学》2023年第4期127-130,共4页Water Resources and Power

基　　金：国家自然科学基金项目(52079120,51779215)。

摘　　要：针对泵站正向大扩散角前池内存在的大尺度回流问题,基于CFD软件,采用RNGκ-ε模型模拟计算了某泵站前池流态,分析原方案下的前池水力特性,并探究了八字形导流墩的整流效果。结果表明,在前池内增设八字形导流墩能有效消除两侧的大尺度回流;沿流道隔墩方向布置两组八字形导流墩后,平面流场回流区消失,边机组轴向流速分布均匀度相较于原方案分别提升了11.03%、11.32%,前池进水条件得到极大改善,泵站入口流速分布更均匀。研究结果可为正向前池泵站整流提供参考。Aiming at the large-scale backflow problem in the forebay with large forward diffusion angle of the pumping station,based on the CFD software,the RNG k-e model was used to simulate the flow state of the forebay of a pumping station.The hydraulic characteristics of the forebay under the original scheme were analyzed.The rectification effect of the figure-eight-shaped diversion piers was explored.The results show that adding figure-eight diversion piers in the forebay could effectively eliminate the large-scale backflow on both sides.The backflow area of the plane flow field disappeared,and the uniformity of the axial flow velocity distribution of the side unit was improved by 11.03%and 11.32%compared with the original scheme.The research results can provide a reference for the rectification of the forward forebaypumping station.

关 键 词：泵站前池 整流 导流墩 数值模拟 

分 类 号：TV675[水利工程—水利水电工程]