底挑消能工共轭水深的优化计算与试验研究  

Optimization calculation and experimental study on conjugate depths via bottom-deflecting arc

作　　者：程飞 杨朝晖 刘善均[3] 

机构地区：[1]长治市水资源管理委员会办公室,山西长治046000 [2]贵州省水利厅,贵阳550002 [3]四川大学水力学与山区河流开发保护国家重点实验室,成都610065

出　　处：《水力发电学报》2014年第3期189-194,共6页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金资助项目(51179114)

摘　　要：根据"底挑"这一新型消能工结构特点,基于水跃基本理论,研究和优化了计入反弧段离心力作用的跃前水深和考虑底挑反弧作用的跃后水深形成共轭水深时的计算方法,采用牛顿迭代法表达了底挑消能工共轭水深两者各自的计算式,并将优化后的共轭水深在水跃函数曲线图中补充体现。同时,以实际水利工程底挑结构为原型,按照枢纽既定工况,分别求得了共轭水深优化计算值与常规值,对比发现优化计算的第一共轭水深略大于常规值,而优化计算的第二共轭水深微小于常规值;并且结合水工模型试验研究验证了共轭水深优化计算的合理性和优势。To study the characteristics of a new energy dissipator or bottom-deflection stilling basin, conjugate depths have been calculated by the fundamental theory of hydraulic jump, and an experiment has been conducted to test and optimize the jump＇s initial depth under the flip bucket centrifugal force and the sequent depth via the bottom deflecting arc. Calculation formulas of these two depths are presented in Newton iterative form, and optimization calculations are expressed in curves of hydraulic jump functions. For the hydraulic jump on a bottom-deflection stilling basin of actual design, its initial and sequent depths were calculated and compared with conventional calculations. The optimized initial depth is slightly greater while the corresponding sequent depth slightly smaller. These calculations have been verified with the experimental data.

关 键 词：水力学 共轭水深 优化计算 底挑 水跃 模型试验 

分 类 号：TV135.21[水利工程—水力学及河流动力学]