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三角绕流滴灌灌水器结构设计和优化（Structural Design and Optimization of Triangle Circulation Drip Irrigation Emitters）
灌水器 三角绕流 水力性能
2010/12/28
以三角绕流滴灌灌水器结构的流道单元为研究对象，利用Pro/E软件完成灌水器造型设计，结合计算流体动力学软件Fluent 6.3模拟分析流道的水力性能，研究此类灌水器的湍流特性，揭示其内部湍流流动机理，并对流道结构进行优化。根据分析结果，通过改变外部大三角的形状与内部小三角的形状和位置，对流道单元进行结构优化，得出一种流态指数小于0.5，流道内速度分布均匀，流量在滴灌允许范围内，抗堵性能优良的三角绕...
Effects of Different Irrigation Programs on the Growth of Cotton Under Drip Irrigation
Drip irrigation Growth of cotton plant Leaf area index (LAI)
2009/1/14
This study was conducted to determine of effects the cotton plant growth of different irrigation programs in a drip system. The amount of water applied was based on free surface evaporation from a scr...
Development of a Mathematical Model Using Dimensional Analysis for Predicting the Friction Losses in Drip Irrigation Laterals with Cylindrical Type In-Line Emitters
Drip irrigation emitters friction loss mathematical model dimensional analysis
2009/1/13
This paper presents a prediction model developed using dimensional analysis for friction losses in drip irrigation laterals. Drip irrigation laterals with cylindrical type in-line emitters placed at d...
Water Application Uniformity of a Subsurface Drip Irrigation System at Various Operating Pressures and Tape Lengths
Subsurface drip irrigation emitter discharge uniformity coefficient emitter performance
2009/1/9
Subsurface irrigation has been the focus of attention mainly because of its low evaporation rate and deep percolation losses. Uniformity of water applications and its stability, however, are still a m...