水资源与水工程学报2023，Vol.34Issue(6)：98-107,10.DOI:10.11705/j.issn.1672-643X.2023.06.12
大底坡下"H"型竖缝式鱼道池室水力特性数值研究
Numerical study on hydraulic characteristics of H-typed vertical slot fishway with high slope
摘要
Abstract
The vertical slot fishway is an ecological compensation structure that can effectively alleviate the adverse impacts of hydraulic engineering on fish migration.It is of great significance to study the hy-draulic characteristics of the vertical slot fishway under reasonable parameters for the construction of eco-nomical and effective fishways.Based on the combination of physical model experiment and three-dimen-sional numerical simulation,the flow field distribution and hydraulic characteristics of the H-typed verti-cal slot fishway of nine different chamber length-to-width ratios are systematically analyzed under the con-dition of 1∶ 20 high slope.The results show that the mainstream flow presents an"S"shape under all chamber length-to-width ratios,with the maximum velocity attenuation rate ranging from 46.4%to 61.3%.It is found that the optimal chamber length-to-width ratio L∶B is 10∶ 8 for the H-typed vertical slot fishway with high slope.Under this ratio,the flow pattern inside the chamber is favorable,with the mainstream bending towards the right and reaching maximum curvature.Meanwhile,low turbulence area reaches the largest,and the fishway meets the requirements of the energy dissipation rate per unit water body,which is beneficial for fish migration and sail upstream.The research results can provide some ref-erence for parameter selection and hydraulic optimization design of H-typed vertical slot fishway with high slope.关键词
"H"型竖缝式鱼道/大底坡/水力特性/流场结构/物理模型/数值模拟Key words
H-typed vertical slot fishway/high slope/hydraulic characteristics/flow field structure/physical model/numerical simulation分类
建筑与水利引用本文复制引用
邓斌,徐拓,黄姣凤,瞿超雄,张家强,蒋昌波..大底坡下"H"型竖缝式鱼道池室水力特性数值研究[J].水资源与水工程学报,2023,34(6):98-107,10.基金项目
湖南省科技创新计划项目(2020RC3037、20hnkj019) （2020RC3037、20hnkj019）
犬木塘水库工程科技创新项目(2022430119001440) （2022430119001440）
湖南省研究生科研创新项目(QL20210198) （QL20210198）
