明渠恒定急变流水深沿程变化的计算  

Computation on streamwise variation of water depth for steady rapidly varied flow in open channel

作　　者：万俊[1] 王韦[1] 田忠[1] 曾华[1] 

机构地区：[1]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：《水利水电技术》2006年第9期38-40,共3页Water Resources and Hydropower Engineering

基　　金：教育部"新世纪优秀人才支持计划"(NCET-0879)资助。

摘　　要：给出了明渠恒定急变流中的能量方程,该方程能够行之有效地解决急变流中的一些水力学问题。引入了“弯道附加压力”的概念,并给出了明确的计算公式。能迅速计算出急变流的水深、流速等水力要素的沿程变化。应用VB编程求解该公式,水面线的计算结果与模型试验实测结果吻合良好。The energy-equation for steady rapidly varied flow is given herein; with which some problems from the rapidly varied flow can be effectively solved, and then a specific formula is also put forward on the basis of the concept of ＂additional pressure from bendings＂ In this way, the streamwise variations of the hydraulic factors such as the water depth, velocity etc. of rapidly varied flow can be conveniently calculated. By solving the equation with VB program, the computation result of the water surface profile coincides better with that from the model test concerned.

关 键 词：明渠 急变流 能量方程 弯道附加压力 水深 

分 类 号：TV133[水利工程—水力学及河流动力学]