U形渠道自由跌水测流  

Falling water flow measurement in U shaped channel

作　　者：陈小攀[1] 

机构地区：[1]四川大学水利水电学院,四川成都610065

出　　处：《吉林水利》2014年第1期19-20,51,共3页Jilin Water Resources

摘　　要：本文主要基于Dey(2003)在水平的U形渠道上的试验,运用堰高为零的薄壁堰模型,采用曲线拟合、无量纲分析的方法得出U形渠道上流量关于跌坎边缘水深的解析式。这种量水方式不仅能够运用于清水的测量,而且能够作为测量含沙量较大的量水设施。得出公式简单,便于实用,计算精度相对误差在5.26%以内。This article is mainly based on Dey（2003） test at the level of the U-shaped channel,using the model of sharp crested weir with zero crest, curve fitting, dimensionless flow analysis method derived the equation of discharge with the water-height on vertical drop.This way of water measurement not only used in water without impurity,but also used as a measurement facilities of water with a certain amount of sediment concentration. Derived formula in this article is simple, easy and practical;the relative error is within the accuracy of 5.26%.

关 键 词：U形渠道 自由跌流 量水堰 

分 类 号：TV132.23[水利工程—水力学及河流动力学]