长江科学院院报 ›› 2023, Vol. 40 ›› Issue (4): 88-94.DOI: 10.11988/ckyyb.20211254

• 水力学 • 上一篇    下一篇

竖缝式鱼道180°转弯段隔板布置与水力特性

柳松涛1, 石小涛1, 孙双科2, 李广宁2, 陈里1, 张立胜1, 谭均军1, 杨文俊3   

  1. 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
  • 收稿日期:2021-11-23 修回日期:2022-02-07 发布日期:2023-04-26
  • 通讯作者: 谭均军(1985-),女,湖北石首人,副教授,博士,研究方向为生态水力学。E-mail: tanjunjun@ctgu.edu.cn
  • 作者简介:柳松涛(1997-),男,湖北武汉人,硕士研究生,研究方向为生态水力学。E-mail: 202008150021032@ctgu.edu.cn
  • 基金资助:
    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)

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

LIU Song-tao1, SHI Xiao-tao1, SUN Shuang-ke2, LI Guang-ning2, CHEN Li1, ZHANG Li-sheng1, TAN Jun-jun1, YANG Wen-jun3   

  1. 1. Hubei International Science and Technology Cooperation Base of Fish Passage, China Three Gorges University, Yichang 443002, China;
    2. China Institute of Water Resources and Hydropower Research, Beijing 100038, China;
    3. Changjiang River Scientiffic Research Institute, Wuhan 430010, China
  • Received:2021-11-23 Revised:2022-02-07 Online:2023-04-26

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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。

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

Abstract: 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.

Key words: vertical slot fishway, 180° turning section, numerical simulation, hydraulic characteristics;flow pattern

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