小底坡梯形明渠临界水深的加权逼近法  

A Weighted Approximation Method for Calculation of the Critical Water Depth of Open Channels with Trapezoid Cross Sections and Smooth Slopes

作　　者：廖艾贤[1] 

机构地区：[1]西南交通大学

出　　处：《西南交通大学学报》1998年第5期524-528,共5页Journal of Southwest Jiaotong University

摘　　要：用两步加权迭代法计算小底坡梯形明渠的临界水深，计算简便，而精度很高：迭代两步所得结果的相对误差为１０－５数量级，迭代三步为１０－６数量级，适用范围也较宽，能满足一般水利工程的需要。The critical water depth of open channels with trapezoid cross sections and smooth slopes is calculated with a weighted approximation method.The relative error is about 10 -5 after two steps of iteration,and about 10 -6 after three steps of iteration.This method is available in a much larger range than the conventional methods and applicable for ordinary irrigation engineering.

关 键 词：明渠 梯形 临界水深 加权逼近法 

分 类 号：TV133[水利工程—水力学及河流动力学]