竖缝式鱼道180°转弯段隔板布置与水力特性  

Arrangement and Hydraulic Characteristics of Divider in 180° TurnSection of Vertical Slot Fishway

作　　者：柳松涛 石小涛[1] 孙双科[2] 李广宁[2] 陈里 张立胜 谭均军[1] 杨文俊[3] LIU Song-tao;SHI Xiao-tao;SUN Shuang-ke;LI Guang-ning;CHEN Li;ZHANG Li-sheng;TAN Jun-jun;YANG Wen-jun(Hubei International Science and Technology Cooperation Base of Fish Passage,China Three Gorges University,Yichang 443002,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Changjiang River Scientiffic Research Institute,Wuhan 430010,China)

机构地区：[1]三峡大学湖北省鱼类过坝技术国际科技合作基地,湖北宜昌443002 [2]中国水利水电科学研究院,北京100038 [3]长江科学院,武汉430010

出　　处：《长江科学院院报》2023年第4期88-94,共7页Journal of Changjiang River Scientific Research Institute

基　　金：国家自然科学基金项目(51709152,51679261);国家自然科学基金优秀青年基金项目(51922065);流域水循环模拟与调控国家重点实验室自主研究课题(SKL2020TS04)。

摘　　要：受枢纽布置与地形条件限制,很多鱼道工程都需要设置180°转弯段。前人研究发现180°转弯段容易出现较大的回流区并影响上溯效率,为改善转弯段水流结构,目前常用的做法是沿转弯段边墙增设垂向导板。与以往研究不同,本研究提出了一种在转弯段内增设顺水流方向导鱼隔板的布置方案。采用数值模拟对转弯段水流流场进行计算研究,结果表明隔板布置可以使主流区基本居中,回流区减小,回流区长宽比增加,转弯段内形成不同流速量值的流区,是一种可供借鉴的优化布置方式。Restricted by hub layout and topography,many fish passage projects need to set up 180°turning section.Previous studies have found that the 180°turning section is prone to generate large recirculation area and hence affecting the upstreaming efficiency of fishes.Vertical rectifier plates are commonly used along the side walls of the turning section to improve the flow pattern of the turning section.Different from previous studies,we propose an arrangement scheme of adding a bulkhead along downstream direction to guide fish in the turning section.Numerical simulation of the flow field in the turning section demonstrate that the bulkhead arrangement makes the mainstream area basically centered,the recirculation area reduced,aspect ratio increased,and the flow area with different velocity values in the turning section formed.

关 键 词：竖缝式鱼道 180°转弯段 数值模拟 水力学特性 水流流态 

分 类 号：TV135[水利工程—水力学及河流动力学] S956.3[农业科学—水产养殖]