Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 2301-2320 of 3826
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Investigation of the Influence of Sprinkler Fins and Dissolved Air on Jet Flow
(American Society of Civil Engineers, 2006)Experimental investigations of an irrigation gun water jet revealed that the flow is a mixture due to the degassing of the air dissolved in the supply water. The expansion of resulting air bubbles allowed velocity measurements ... -
Exact Equations for Critical Depth in a Trapezoidal Canal
(American Society of Civil Engineers, 2005)Critical depth is an important parameter in the analysis of varied flow in canals and natural streams. For triangular, rectangular, and parabolic channel sections it is possible to express critical depth analytically. ... -
Volume Compensation Method for Routing Irrigation Canal Demand Changes
(American Society of Civil Engineers, 2005)This paper examines the problem of routing known water demands through gate-controlled, open-channel irrigation delivery systems. Volume-compensation principles were used to route multiple demands in multiple-pool canal ... -
Discussion of “Analytical Relationships for Designing Rectangular Drip Irrigation Units” by Luis Juana, Alberto Losada, Leonor Rodríguez-Sinobas, and Raúl Sánchez
(American Society of Civil Engineers, 2005) -
Development and Application of an Integrated Optimization-Simulation Model for Major Irrigation Projects
(American Society of Civil Engineers, 2005)A nonlinear, constrained multivariable optimization routine is developed for deciding the optimal canal water release and linked to a canal hydraulic module ( -
Closure to “Analytical Relationships for Designing Rectangular Drip Irrigation Units” by Luis Juana, Alberto Losada, Leonor Rodríguez-Sinobas, and Raúl Sanchez
(American Society of Civil Engineers, 2005) -
Closure to “Linear Solution for Hydraulic Analysis of Tapered Microirrigation Laterals” by Gürol Yıldırım and Necati Ağıralioğlu
(American Society of Civil Engineers, 2005) -
Measurement Accuracy Analysis of Sprinkler Irrigation Rainfall in Relation to Collector Shape
(American Society of Civil Engineers, 2005)Sprinkler irrigation is a widely studied subject in scientific and technical literature. Initially studies were mainly conducted experimentally, whereas more recently we can say that the use of simulation models is the ... -
Discussion of “Linear Solution for Hydraulic Analysis of Tapered Microirrigation Laterals” by Gürol Yildirim and Necati Ağiralioğlou
(American Society of Civil Engineers, 2005) -
Multicriteria Analysis in an Irrigation District in Mexico
(American Society of Civil Engineers, 2005)The Alto Rio Lerma Irrigation District, located in the state of Guanajuato in Mexico, is an agricultural area whose sustainability depends partially upon groundwater withdrawal for crop irrigation. Because of high pumping ... -
AWARDS
(American Society of Civil Engineers, 2005) -
Analytical Expressions for Hydraulic Calculation of Trapezoidal Drip Irrigation Units
(American Society of Civil Engineers, 2005)Analytical expressions have been developed relating water distribution indexes in trapezoidal drip irrigation units to design variables which define these units: lengths and diameters of pipes, emitter and lateral spacing, ... -
Stream Multiaquifer Well Interactions
(American Society of Civil Engineers, 2005)In this paper, unsteady flow into a multiaquifer well due to stream stage changes and varying pumping rate is analyzed. The well is located at such a distance that the radius of influence touches the stream boundary; hence, ... -
Coupled Surface–Subsurface Solute Transport Model for Irrigation Borders and Basins. I. Model Development
(American Society of Civil Engineers, 2005)Surface fertigation is widely practiced in irrigated crop production systems. Lack of design and management tools limits the effectiveness of surface fertigation practices. The availability of a process-based coupled ... -
Comparison of Gradually Varied Flow Computation Algorithms for Open-Channel Network
(American Society of Civil Engineers, 2005)This paper presents a comparison of two algorithms—the forward-elimination and branch-segment transformation equations—for separating out end-node variables for each branch to model both steady and unsteady flows in branched ... -
Laboratory Investigation of Plough Sole Reformation in a Simulated Paddy Field
(American Society of Civil Engineers, 2005)The study aimed to determine the number of cultivation cycles required to reform the plough sole once it has been destroyed or removed from the paddy. An ad hoc infiltration column experiment, which is a cylinder of -
Coupled Surface–Subsurface Solute Transport Model for Irrigation Borders and Basins. II. Model Evaluation
(American Society of Civil Engineers, 2005)The development of a coupled surface–subsurface solute transport model for surface fertigation management is presented in a companion paper (Part I). This paper discusses an evaluation of the coupled model. The numerical ... -
Theory of Seepage into an Auger Hole in a Confined Aquifer
(American Society of Civil Engineers, 2005)A steady-state theory is presented for predicting flow into an auger hole partially penetrating a homogeneous and anisotropic confined aquifer that is underlain by an impermeable layer. The developed equations can be ... -
Analytical Solution for Circular Gates as Flow Metering Structures
(American Society of Civil Engineers, 2005)Water measurement in irrigation canals is frequently hindered by low head availability and high capital investment costs associated with construction of compatible hydraulic structures. Often irrigation systems have circular ... -
Discussion of “Transition Effects in Flow Over Side Weirs” by Yilmaz Muslu, Ebubekir Yuksel, and Hasan Tozluk
(American Society of Civil Engineers, 2005)