长江科学院院报 ›› 2015, Vol. 32 ›› Issue (1): 79-83.DOI: 10.3969/j.issn.1001-5485.2015.01.016

• 水力学 • 上一篇    下一篇

竖缝式鱼道池室结构变化对水力特性的影响分析

王猛a, 史德亮a, 陈辉a, 左艳霞b   

  1. 长江科学院 a.水力学研究所;b.河流研究所, 武汉 430010
  • 收稿日期:2013-08-21 出版日期:2015-01-01 发布日期:2015-01-15
  • 作者简介:王猛(1988-),男,河南驻马店人,硕士研究生,主要从事水力学及河流动力学研究,(电话)15285047259(电子信箱)perfectwm2022@126.com。

Effect of Pool Structure Variation on Hydraulic Characteristicsof Vertical-slot Fishway

WANG Meng1,SHI De-liang1,CHEN Hui1,ZUO Yan-xia2   

  1. 1.Hydraulics Department, Yangtze River Scientific Research Institute, Wuhan 430010,China;
    2. River Department, Yangtze River Scientific Research Institute, Wuhan 430010,China
  • Received:2013-08-21 Online:2015-01-01 Published:2015-01-15

摘要: 竖缝鱼道的消能主要集中在竖缝处,竖缝束窄使水流形成漩涡,导致鱼道内流速过高,水流紊乱。为了改善竖缝式鱼道池室的水流特性,采用雷诺应力(RSM)模型对不同结构形式的同侧竖缝鱼道进行数值模拟。研究表明:在池室内正对竖缝下游布置圆柱型障碍物,竖缝处流速梯度减小,紊动能和雷诺剪切力均降低约20%~30%,这种池型的鱼道水力特性稳定,能满足更多鱼类的过坝。

关键词: 竖缝式, 鱼道, 结构变化, 数值模拟, 雷诺应力模型

Abstract: The energy dissipation of vertical-slot fishway is concentrated near the slot. Due to the shrinkage and constraint of the slot, vortex is generated, and the flow in the fishway is made faster and tangled. In order to improve the hydraulic characteristics of fishway pool room, the RSM(Reynold’s stress model) was applied to numerically simulate the same side of vertical-slot fishways of different structures. Results suggest that a cylindrical barrier in the pool at the slot exit could help attenuate the velocity gradients at the slot, and reduce the turbulent kinetic energy and Reynolds shear stress by 20%-30%. The hydraulic characteristic of this fishway is stable and it could meet the hydrodynamic requirements of more fishes passing through the dam.

Key words: vertical slot, fishway, structural variation, numerical simulation, Reynold’s stress model

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