抛物线形断面渠道收缩水深的简易算法  

A simple algorithm of contraction depth of parabola channel

作　　者：滕凯 

机构地区：[1]黑龙江齐齐哈尔市水务局,黑龙江齐齐哈尔市161006

出　　处：《人民长江》2013年第9期97-99,共3页Yangtze River

摘　　要：针对目前求解抛物线形断面渠道收缩水深普遍存在的计算繁复问题,通过引入无量纲相对水深参数,对抛物线形断面渠道收缩水深基本计算公式进行变形整理。在此基础上,以保证求解成果精度满足工程设计要求为前提,以获得最简化的计算公式为目的,对函数高次方程优化拟合,获得了表达形式简单、计算简捷、适用范围广的近似计算公式。具有实际应用推广价值。The calculation of contraction depth of parabola channel is complicated. By introducing dimensionless relative depth parameter, and on the basis of reference and transformation of the basic contraction depth formula of parabola channel, we opti- mized and fitted the higher order equation obtaining the approximate formula with simple expression. The presented calculation method is convenient and has wide application range.

关 键 词：抛物线形断面 收缩水深 优化拟合 简化计算 

分 类 号：TV131.4[水利工程—水力学及河流动力学]