长江科学院院报 ›› 2021, Vol. 38 ›› Issue (9): 86-91.DOI: 10.11988/ckyyb.20200726

• 水力学 • 上一篇    下一篇

组合隔板式鱼道水力特性数值模拟研究

陈磊1,2, 谭均军1, 石小涛1, 柯森繁1,2, 谭红林1,2, 李鸿1,2   

  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;
    2.三峡大学 水利与环境学院,湖北 宜昌 443002
  • 收稿日期:2020-07-21 修回日期:2020-11-07 出版日期:2021-09-01 发布日期:2021-09-06
  • 通讯作者: 谭均军(1985-),女,湖北石首人,副教授,博士,主要从事水生态及环境研究。 E-mail: tanjunjun@ctgu.edu.cn
  • 作者简介:陈 磊(1995-),男,江西赣州人,硕士研究生,主要从事生态水力学研究。 E-mail: 781027668@qq.com
  • 基金资助:
    国家自然科学基金项目(51709152, 51579136);中国三峡建设管理有限公司科研项目(2018(W)-221)

Numerical Simulation of Hydraulic Characteristics of Combined Baffle Type Fishway

CHEN Lei1,2, TAN Jun-jun1, SHI Xiao-tao1, KE Sen-fan1,2, TAN Hong-lin1,2, LI Hong1,2   

  1. 1. Hubei International Science and Technology Cooperation Base of Fish Passage, China Three Gorges University, Yichang 443002, China;
    2. College of Hydraulic and Environment Engineering, China Three Gorges University, Yichang 443002, China
  • Received:2020-07-21 Revised:2020-11-07 Online:2021-09-01 Published:2021-09-06

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摘要： 鱼道是为鱼类提供洄游通道的一种重要的工程措施。基于Flow-3D采用标准RNG k-ε紊流模型和Tru-VOF追踪自由液面方法,对鱼道池室内流场进行三维紊流数值模拟,研究池室内水流流速、流态空间分布,分析鱼道的水力特性对目标鱼类洄游上溯的影响。结果表明:溢流堰与竖缝组合隔板式鱼道在设计流速v=0.75 m/s条件下,竖缝处平均流速为0.83 m/s,竖缝处流速分布范围为0.76~0.89 m/s;堰上流速为0.90~1.12 m/s,回流区流速分布范围为0.09~0.25 m/s,流速大小在鱼类的克流能力范围之内,但靠竖缝隔板处存在明显的主流贴壁现象。为此开展了池室优化方案设计,使鱼道池室流态满足鱼类上溯要求。

关键词: 鱼道, 组合隔板式, 数值模拟, 水力特性, 流场

Abstract: Fishway is an important engineering measure for fish migration. In this paper, 3D turbulence numerical simulation of the flow field in fishway pool was carried out using standard RNG k-ε turbulence model and Tru-VOF tracking free liquid level method based on Flow-3D. The spatial distribution of flow velocity and flow pattern in fishway pool was studied, and the influence of the hydraulic characteristics of fishway on the upstream migration of target fish was analyzed. Results show that in the overflow weir combined with vertical slot fishway at design velocity (v=0.75 m/s), the average flow velocity at slot was 0.83 m/s (ranging between 0.76 m/s and 0.89 m/s), the flow velocity above weir was from 0.90 m/s to 1.12 m/s, and the velocity in backflow zone was in the range of 0.09-0.25 m/s, all within the limits of fish swimming ability. Nevertheless, in the adjacent of the slot baffle, the main stream obviously adhered to the wall. The design of fishway pool was optimized to meet the upstreaming requirements of fish.

Key words: fishway, combination baffle type, numerical simulation, hydraulic characteristics, flow field

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