竖井进流水平旋转内消能泄水道流速分布与消能率的试验研究  

Experimental study on velocity distribution and energy dissipation ratio of the horizontal vortex and inner dissipating tunnel with an inlet shaft

作　　者：牛争鸣[1] 孙静[1] 程庆迎[1] 

机构地区：[1]西安理工大学水利水电学院,西安710048

出　　处：《水力发电学报》2003年第1期61-69,共9页Journal of Hydroelectric Engineering

摘　　要：本文为“竖井进流水平旋转内消能泄水道的壁面压力分布”一文的相关篇。在该文的基础上本文依据试验资料给出相应的流速分布的试验研究成果 ,并对该种泄水道的消能率进行了分析计算 ,对其消能机理进行了初步的探讨。试验研究结果表明 ,该种泄水道的消能率与起旋器出口的弗劳德数呈线性关系 ;在h D≤1,消能率可近似为常数 ,在其它工况下 ,消能率与相对上下游水位差 (H -h) h的关系为指数形式。This is a correlative report of “Wall pressure distribution of the horizontal vortex and inner energy dissipating tunnel with an inlet shaft” published earlier. In this report the correlative experimental results of velocity distributions are shown, the energy dissipation ratio is analyzed and calculated, and the energy dissipation mechanism is also discussed. The results show that, the relation between energy dissipation ratio and Froude Number of the vortex making inlet of the tunnel is linear, and the relation between energy dissipation and (H-h)/h is exponential when h/D>1 and constant in other conditions.

关 键 词：水工建筑 水力学 泄水建筑物 竖井进流 水平旋转 消能率 试验 

分 类 号：TV651.13[水利工程—水利水电工程]