水利水电技术2017，Vol.48Issue(11)：20-25,6.DOI:10.13928/j.cnki.wrahe.2017.11.004
竖缝式鱼道不同角度转折段水池水力特性及改进研究
Study and improvement on hydraulic characteristics of turning-section pools with various angles for vertical slot fishway
摘要
Abstract
Due to the limitations from the factors of the locations of the entrance and exit,site condition,project layout,etc.of fishway,the unconventional pools for the turning sections with various turning angles are necessary to be arranged along the fishway with twining and turning layouts for most of fishways.The distribution law of the flow structures in the turning section pools of the Type Ⅰ fishway with various turning angles α of(0° ＜ α ≤90°) are studied herein with the relevant numerical simulation method.The study shows that when the turning angle α is within the range of 0° × 45°,the mainstream is basically centered with a better flow structure.When the turning angle α is within the range of 45° ～90°,the flow structure of that the mainstream is adherent to the sidewall along with a large-scale backflow region occurs,moreover,along with the increase of the turning angle α,the degree of the adherence of mainstream to the sidewall is increased,while the scale of the inside backflow region is further increased as well.Aiming at the problems from the flow structure of the turning angle α of fishway within the range of 45° ～ 90°,the improvement measures of adding flow guiding plate and extending the length of the turning section pool are proposed,thus the flow pattern is improved.The study result can provide a reference for design of fishway.关键词
竖缝式鱼道/转折段水池/数值模拟/水力学特性Key words
vertical slot fishway/turning section pool/numerical simulation/hydraulic characteristics分类
建筑与水利引用本文复制引用
张超,孙双科..竖缝式鱼道不同角度转折段水池水力特性及改进研究[J].水利水电技术,2017,48(11):20-25,6.基金项目
国家自然科学基金项目(51679261) （51679261）
国家自然科学青年基金项目(51709278) （51709278）
