Friction losses in layflat manifold hose and drip-tape fittings

被引：0
|
作者：
Tajrishy, M.A.M. [1 ]
Hills, D.J. [1 ]
机构：
[1] Univ of California, Davis, United States
来源：
Applied Engineering in Agriculture | 1992年 / 8卷 / 03期
关键词：
Flow Of Fluids--Pipes - Hose--Agricultural Applicaitons - Hose--Fittings - Hydraulics - Irrigation--Pipelines;
D O I：
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中图分类号：
学科分类号：
摘要：
A laboratory investigation was conducted to study the hydraulic characteristics of layflat manifold hose and to determine the friction loss factors for drip-tape fittings commonly used in microirrigation. Results indicate values for the Hazen-Williams roughness coefficient, C, of 135 and 140 for 76 mm (3 in.) and 102 mm (4 in.) diameter layflat plastic hoses, respectively. The head losses for a variety of drip-tape fittings are presented in terms of tape length producing an equivalent friction loss.
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页码：343 / 346
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