F型反坡水跃特性实验研究  

Study on characteristics of F-shape hydraulic jump in adverse-slope channel

作　　者：张挺[1,2] 许唯临[2] 伍超[2] 石莎[1] 苏志炜[1] 

机构地区：[1]福州大学土木工程学院,福建福州350108 [2]四川大学水力学与山区河流开发保护国家重点实验室,四川成都610065

出　　处：《福州大学学报（自然科学版）》2011年第2期293-297,共5页Journal of Fuzhou University(Natural Science Edition)

基　　金：国家重点基础研究发展计划资助项目(2007CB714705);福建省自然科学基金资助项目(E0710013)

摘　　要：进行了反坡坡率i为-0.025、-0.033和-0.05的物理模型试验.通过实验分析了F型反坡水跃在坡率范围-0.05<i<0时的水力特性,讨论了共轭水深比η与弗劳德数Fr1的函数关系,而且引进了反坡水跃参数Gs,进而分析了反坡水跃参数Gs与弗劳德数Fr1的函数关系及其与共轭水深比η的函数关系.根据实验结果确定了水跃剖面面积修正系数k的值,用以分析确定以上各种函数关系之间的相关规律.Experiments were performed with hydraulic jumps occurring on adverse - slope which has three bottom slopes （ -0. 025, -0. 033, -0. 050）. The analysis was carried out for the adverse - slope in range of - 0.05 to 0. Data were collected to obtain a general relationship for the sequent depth ratio η as a function of the upstream Froude numbers Frl and the adverse - slope angle. Further, a special parameter named adverse jump parameter, Gs, was introduced. Then, a function relationship between the adverse jump parameter and the upstream Froude number was studied. The coefficient k as a important parameter was investigated. The results were obtained with the hope that might be useful for energy dissipation for a range of hydraulic structures.

关 键 词：反坡水跃 共轭水深比 修正系数k 

分 类 号：TV653[水利工程—水利水电工程]