Analytical equation for variation of discharge in drip irrigation laterals
Analytical equation for variation of discharge in drip irrigation laterals
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DOI：
10.1061/(asce)0733-9437(2003)129:4(295
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发表时间：
2003-07-01
影响因子：
2.6
通讯作者：
Bosu, SS
中科院分区：
文献类型：
--
作者：
Ravikumar, V;Ranganathan, CR;Bosu, SS
流量变化的统计均匀度是滴灌灌水器设计中的一个重要参数。导出了确定流量变异系数的简单解析式。该方程用于确定数值问题的流量变异系数。并与能量梯度线法进行了比较。这两种方法给出了相同的结果。对于任何所需的流量变化系数，支管的直径可以直接针对已知的支管长度、坡度、滴头流量指数、支管起始处的压头和通过支管的流量进行设计，通过将分析方程写成二次形式。
Statistical uniformity of discharge variation is an important parameter in designing drip irrigation laterals. A simple analytical equation is derived to determine the coefficient of variation of discharge. This equation is used to determine the coefficient of variation of discharge for a numerical problem. The result is compared with the energy gradient line approach. Both the methods give the same result. For any required coefficient of variation of discharge, the diameter of a lateral can be designed directly for a known lateral length, slope, emitter discharge exponent, pressure head at the start of the lateral, and discharge rate through the lateral, by writing the analytical equation in quadratic form.