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Interrelationships of Irrigation Uniformity Terms
Publisher: American Society of Civil Engineers
Abstract: Irrigation uniformities are examined for six assumed statistical distributions of depth of water infiltrated. Christiansen's uniformity (UC) and the lower quarter distribution uniformity (DU) are related analytically to ...
Discussion of “<i>Irrigation Uniformity Relationships for Irrigation System Management</i>” by Albert J. Clemmens (September/October, 1991, Vol. 117, No. 5)
Publisher: American Society of Civil Engineers
Velocity Head Considerations for Trickle Laterals
Publisher: American Society of Civil Engineers
Abstract: An analytical solution for a trickle lateral is presented which includes velocity head in the basic formulation. The relative error when neglecting velocity head is greater for laminar than for turbulent flow. However, the ...
Trickle Lateral Hydraulics. II: Design and Examples
Publisher: American Society of Civil Engineers
Abstract: The trickle lateral analysis described in the companion paper is used to illustrate applications of a new analytical solution in system design. Examples are provided to point out the basic concepts and procedures based on ...
Trickle Lateral Hydraulics. I: Analytical Solution
Publisher: American Society of Civil Engineers
Abstract: An important objective of any trickle system is a uniform distribution of water delivered through the emitters. Computation of flow distribution requires knowledge of the variables such as pressure, flow rate, length of ...
Closure to “New Results for an Approximate Method for Calculating Two-Dimensional Furrow Infiltration” by E. Bautista, A. W. Warrick, and T. S. Strelkoff
Publisher: American Society of Civil Engineers
Soil-Limiting Flow from Subsurface Emitters. II: Effect on Uniformity
Publisher: American Society of Civil Engineers
Abstract: Soil variability can affect the flow rate of water from subsurface trickle emitters. This is because of a buildup of pressure in the soil when water cannot be easily transmitted away from the emitter. In this paper, an ...
Sprinkler Irrigation Droplet Dynamics. II: Numerical Solution and Model Evaluation
Publisher: American Society of Civil Engineers
Abstract: A system of equations, with strong physical basis, was derived for sprinkler irrigation droplet dynamics in the companion paper. Numerical solution of these equations and model evaluation is discussed in this paper. With ...
Sprinkler Irrigation Droplet Dynamics. I: Review and Theoretical Development
Publisher: American Society of Civil Engineers
Abstract: Droplet dynamics simulations are key to predicting sprinkler irrigation precipitation patterns. This paper includes derivations of equations describing droplet motion through a steady, uniform horizontal airflow (wind). ...
Soil Hydraulic Properties Affecting Discharge Uniformity of Gravity-Fed Subsurface Drip Irrigation Systems
Publisher: American Society of Civil Engineers
Abstract: The use of subsurface drip irrigation (SDI) is increasing for many reasons, including its many agronomic advantages and the ability for safe application of wastewater to crops. In contrast to surface drip irrigation, soil ...