Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1201-1220 of 3826
-
Irrigation Scheduling Using Complex Machine Scheduling
(American Society of Civil Engineers, 2015)Irrigation schedules are used in many irrigation schemes that operate on a rotational or arranged-demand basis. Determining these schedules is a complex problem, especially when done by hand. Operations research tools such ... -
Methodologies for Successful Implementation of Smart Irrigation Controllers
(American Society of Civil Engineers, 2015)Studies have shown minimal impact by smart irrigation controllers when installed indiscriminately, but targeting overirrigators increases the water conservation potential. The objective was to evaluate different methodologies ... -
Is It Better to Use Gate Opening as Control Variable than Discharge to Control Irrigation Canals?
(American Society of Civil Engineers, 2015)Centralized model predictive controllers are common in water systems. The control action variable can be the discharge, and the subsystems (canal pools) are modeled separately. This paper focuses on short canal pools where ... -
Combined Simulation-Optimization Model for Assessing Irrigation Water Supply Capacities of Reservoirs
(American Society of Civil Engineers, 2014)This paper presents a combined simulation-optimization model for simulating reservoir operations without any detailed operation rules; it features the integration of a nonlinear, multiple-objective function and a heuristic ... -
Simple Parametric Instantaneous Unit Hydrograph
(American Society of Civil Engineers, 2015)A new, simple, parametric instantaneous unit hydrograph (IUH) with conceptual and physical justification is proposed. The new IUH has only two parameters, one of which is the time base of the unit hydrograph, an obvious ... -
Investigation of Reservoir Qualitative Behavior Resulting from Sudden Entry of Biological Pollutant
(American Society of Civil Engineers, 2015)In this paper, fluctuation in reservoir water quality is simulated and evaluated upon the sudden entry of a biological load. By using Version 3.2 of the two-dimensional quality simulation software CE-QUAL-W2, Iran’s Karaj ... -
Clear Water Scour Downstream of Log Deflectors in Horizontal Channels
(American Society of Civil Engineers, 2015)Stream deflectors are in-stream hydraulic structures that limit the flow channel width, thereby accelerating the flow through the constricted section. Single-wing and double-wing log deflectors are the two most commonly ... -
Converging Kinematic Wave Flow
(American Society of Civil Engineers, 2015)The governing equation for converging kinematic wave (KW) flow was derived and compared with laboratory measurement and field tests. The key factors for converging KW flows are found to be excess rainfall depth, surface ... -
Isolation of a 1D Infiltration Time Interval under Ring Infiltrometers for Determining Sorptivity and Saturated Hydraulic Conductivity: Numerical, Theoretical, and Experimental Approach
(American Society of Civil Engineers, 2015)A new method for the isolation of the time interval in which cumulative double ring infiltration data strictly represents the one-dimensional (1D) infiltration is proposed. The infiltration time necessary for the wetting ... -
Levee Layouts and Design Optimization in Protection of Flood Areas
(American Society of Civil Engineers, 2015)This paper addresses a possible decrease in flood damages by using structural methods and determines proper locations (layout) to construct protective levees and height of levees (design of levees) in high-risk areas. ... -
Hydraulics of a Partially Penetrating Ditch Drainage System in a Layered Soil Receiving Water from a Ponded Field
(American Society of Civil Engineers, 2015)This study deals with the development of an analytical solution for predicting seepage into an array of ditch drains dug in a three-layered soil underlain by an impervious barrier and receiving water from a ponded field ... -
Discussion of “Discharge Characteristics of a Trapezoidal Labyrinth Side Weir with One and Two Cycles in Subcritical Flow” by M. Emin Emiroglu, M. Cihan Aydin, and Nihat Kaya
(American Society of Civil Engineers, 2015) -
Discussion of “Laboratory and Field Calibration of the Diviner 2000 Probe in Two Types of Soil” by J. Haberland, R. Gálvez, C. Kremer, and C. Carter
(American Society of Civil Engineers, 2015) -
Discussion of “Initial Drop Velocity in a Fixed Spray Plate Sprinkler” by G. Sánchez Burillo, R. Delirhasannia, E. Playán, P. Paniagua, B. Latorre, and J. Burguete
(American Society of Civil Engineers, 2015) -
Closure to “Modified G and GAVG Correction Factors for Laterals with Multiple Outlets and Outflow” by Sayed-Hossein Sadeghi and Troy Peters
(American Society of Civil Engineers, 2014) -
Center Pivot Sprinkler Distribution Uniformity Impacts on the Spatial Variability of Evapotranspiration
(American Society of Civil Engineers, 2015)Understanding variable evapotranspiration (ET) throughout a field can help maximize yield on a per-acre basis, as well as assist with proper irrigation scheduling. The results from this study indicate that irrigation system ... -
Flow Characteristics of a Sharp-Crested Side Sluice Gate
(American Society of Civil Engineers, 2015)The side sluice gate is used in open channels to divert a part of flow to a side channel and to regulate the head of distributaries. In present study, the distribution of the three-dimensional velocity in the vicinity of ... -
Integrating Water, Nitrogen, and Salinity in Sustainable Irrigated Systems: Cover Crops versus Fallow
(American Society of Civil Engineers, 2014)Cover cropping techniques are efficient for reducing pollutant leaching, avoiding soil erosion, or enhancing soil properties of agricultural soils. However, few studies evaluate the overall effect of cover crop (CC) on ... -
Closure to “Aeration, Flow Instabilities, and Residual Energy on Pooled Stepped Spillways of Embankment Dams” by Stefan Felder and Hubert Chanson
(American Society of Civil Engineers, 2015) -
Discussion of “<i>Channel Design to Minimize Lining Material Costs</i>” by Thomas J. Trout (December, 1982)
(American Society of Civil Engineers, 1984)