摘要
针对地势复杂地区的鱼道布置难题,以小长宽比情况下带有锲形墩头形式的竖缝式鱼道为例,通过改变其池室的长宽比、底坡、布置形式,利用数值模拟方法探究了各参数对池室水流结构的影响。结果表明,长宽比对于非常规尺寸池室的水流结构依旧起决定性作用,池室湍动能的峰值主要分布在墩头及导板末端,且同侧布置下的湍动能沿流程变幅明显高于异侧布置;同侧布置形式下的同一竖缝断面流速分布差异性较大,存在明显的低流速及高流速区域,异侧布置下的竖缝断面流速基本趋于均匀。
A vertical slit fishway with a small length-width ratio in the form of a wedge-shaped pier head was used as an example to solve arrangement difficulty of fishway in a complex terrain area.By varying the length-width ratio,bottom slope and layout of the chamber,the effect of various parameters on the flow structure of the chamber was investigated using numerical simulation.The results show that the length-width ratio still plays a decisive role in the flow structure of the non-conventional size of the chamber,the peak turbulent energy of the chamber is mainly distributed at the pier head and the end of the guide plate,and the variation of turbulent energy along the flow is significantly higher under the same side arrangement than under the different side arrangement;The flow velocity distribution of the same vertical slit section under the same side arrangement is more different,and there are obvious low and high flow velocity areas.The flow rate of the vertical slot section under the opposite-sided arrangement is basically uniform.
作者
赵国安
沈春颖
苟超
ZHAO Guo-an;SHEN Chun-ying;GOU Chao(College of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,China)
出处
《水电能源科学》
北大核心
2022年第8期113-117,共5页
Water Resources and Power
关键词
竖缝式鱼道
小长宽比
水力特性
布置形式
数值模拟
vertical slot fishway
small length-width ratio
hydraulic characteristics
layout form
numerical simulation
