摘要
U形渠道已广泛应用于水利工程中,对于U形渠道临界水深,目前虽可直接计算,但算式比较复杂。所提出的U形渠道临界水深直接计算公式,极其简单,且精度满足工程要求,在U形渠道参数范围内,相对误差绝对值小于1.235 8%。最简算法的主要计算步骤是,首先计算分界流量,当已知流量大于分界流量时,过水断面为U形,可直接用公式进行最简计算而得出结果;当已知流量小于分界流量时,过水断面按弓形,可用另文公式进行计算。
U-shaped channel has been widely used in water conservancy projects.For the critical depth of the U-shaped channel,although it can be calculated directly at present,but the algorithm is more complex.This paper introduced a direct calculation formula for the critical depth of the U-shaped channel which was extremely simple and the precision could meet the requirement of engineering.Within the parameters of the U-shaped channel,the absolute value of relative error was less than 1.235 8%.The main calculation steps of the simplest algorithm are： firstly to calculate the critical flow;when the known flow is bigger than the critical flow,the cross section is U-shaped,which can directly be used the simplest calculation and get the result;when the known flow is less than the critical flow,the cross section is bow-shaped,which can be calculated by another formula.
出处
《人民黄河》
CAS
北大核心
2013年第6期94-96,共3页
Yellow River
关键词
U形渠道
临界水深
最简算法
分界流量
U-shaped channel
critical depth
simplest algorithm
transitional flow
