悬链线形断面渠道收缩水深的简化算法  

Simplified Method for Calculation of Shrinkage Depth in Canal with Catenary Section

作　　者：滕凯 

机构地区：[1]齐齐哈尔市水务局,齐齐哈尔市161006

出　　处：《西北水电》2013年第1期19-21,共3页Northwest Hydropower

摘　　要：针对目前求解悬链线形断面渠道收缩水深尚无一种可采用的简化计算法,而传统计算方法(图解法、试算法)计算过程繁复、成果精度不够、不便实际应用。文章通过引入无量纲相对水深参数,在对悬链线形断面渠道收缩水深计算公式变形整理的基础上,经对式中复杂隐函数方程的优化拟合,获得了表达形式简单、计算简捷、求解成果精度高、适用范围广的简化计算公式。currently, no one simplified method for calculation of shrinkage depth in canal with catenary section. But the traditional calcu- lation methods （graphical method, the test algorithm） are with complicated calculation processes, poor precision and inconvenient prac- tice. In this paper, the dimensionless relative depth parameter is introduced. And based on modification on the formula for calculation of shrinkage depth in canal with catenary section and through the optimized fitting of the complex implicit function equation in the formula, one simplified calculation formula featuring s^mple expression mode, simple and fast calculation process, high-precision achievement and wide applicable range is obtained.

关 键 词：悬链线形断面 收缩水深 优化拟合 简化计算 

分 类 号：TV131[水利工程—水力学及河流动力学]