基于LES模型的箱涵式进水流道水中消涡装置分析  

Analysis of vortex elimination devices in cube-type inlet conduit based on LES model

作　　者：裴杰 李四海 王振华 徐贵颖 杨帆 PEI Jie;LI Sihai;WANG Zhenhua;XU Guiying;YANG Fan(Suqian Water Conservancy Bureau,Suqian 223800,China;Shangdong Provincial Water Resources Survey and Design Institute Co.Ltd,Jinan 250013,China;JiNan Digital Twins and Intelligent Water Conservancy,Jinan 250013,China;Jiangsu Provincial Water Conservancy Survey and Design Institute Co.Ltd,Yangzhou 225127,China;College of Hydraulic Science and Engineering,Yangzhou University,Yangzhou 225009,China)

机构地区：[1]宿迁市水利局,江苏宿迁223800 [2]山东省水利勘测设计院有限公司,济南250013 [3]济南市数字孪生与智慧水利重点实验室,济南250013 [4]江苏省水利勘测设计研究院有限公司,江苏扬州225127 [5]扬州大学水利科学与工程学院,江苏扬州225009

出　　处：《水科学与工程技术》2024年第4期41-45,共5页Water Sciences and Engineering Technology

基　　金：国家自然科学基金项目(51609210);江苏省高等学校自然科学研究重大项目(20KJA570001);济南市数字孪生与智慧水利重点实验室开放研究基金(37H2022KY040101)。

摘　　要：为解决某泵站箱涵式进水流道内部水涡问题,以该泵站箱涵式进水流道为研究对象,基于LES模型,求解5种不同消涡方案对应的箱涵式进水流道内部水涡时空演变过程,定量对比喇叭口处旋涡中心平均涡量变化。结果表明:采用流线型消涡锥和后消涡板方案箱涵式进水流道消涡的效果最佳,相比原方案旋涡涡心的平均涡量降低96.53%,喇叭管进口面的轴向速度分布均匀度为95.7%,速度加权平均角为86.4°,消涡效果较好。In order to solve the problem of water vortex in cube-type inlet conduit of a pumping station in Donghu Reservoir of Shandong Province,the cube-type inlet conduit of the pumping station is taken as the research object.Based on the LES model,the temporal-spatial erosion process of the water vortex in cube-type inlet conduit under five different vortex elimination measures is solved,and the change of the average vorticity at the vortex center of the bell mouth is quantitatively compared.The results show that the water vortex elimination effect of the cube-type inlet conduit is the best when the streamlined vortex-eliminating cone and vortex-eliminating plate scheme are adopted.Compared with the original scheme,the average vorticity of the vortex center is reduced by 96.53%.The axial velocity distribution uniformity of the inlet surface of the bell pipe is 95.7%,and the weighted average angle of velocity is 86.4°.The water vortex elimination effect is remarkable.The research results can provide references for the settings of vortex elimination measures for cube-type inlet conduit of similar pumping stations.

关 键 词：泵站 箱涵式进水流道 水中涡 消涡锥 消涡板 涡态 LES 数值模拟 

分 类 号：TV135[水利工程—水力学及河流动力学]