Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 1481-1500 of 3826
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Effect of Stilling Basin Geometry on the Dissipative Process in the Presence of Block Ramps
(American Society of Civil Engineers, 2012)The dissipative process that occurs in the presence of a hydraulic structure is a major topic in river engineering. The energy dissipation has to be correctly evaluated to prevent structural stability risks and to optimize ... -
GoRoSo: Feedforward Control Algorithm for Irrigation Canals Based on Sequential Quadratic Programming
(American Society of Civil Engineers, 2013)The feedforward control canal problem is stated as a nonlinear optimization problem with constraints on the gate movements. It is numerically solved with the use of the sequential quadratic problem (SQP) method and the ... -
Effects of Subsurface Drainage on Evapotranspiration for Corn and Soybean Crops in Southeastern North Dakota
(American Society of Civil Engineers, 2012)A field experiment was conducted during the 2009 and 2010 growing seasons to determine the effect of subsurface drainage (SSD) on evapotranspiration (ET) and crop coefficients ( -
Simple ET0 Forms of Penman’s Equation without Wind and/or Humidity Data. II: Comparisons with Reduced Set-FAO and Other Methodologies
(American Society of Civil Engineers, 2013)In the companion paper, a set of simplified formulas was derived to approximate the Penman equation for estimating reference evapotranspiration ( -
Soil Moisture Status in an Irrigated Pecan Field
(American Society of Civil Engineers, 2013)In this paper, the authors have modified a traditional transpiration formula using a soil-gas stress response function of the soil water content to appropriately depict the leaf water head. This allowed identification of ... -
Performance of Rain Delay Features on Signal-Based Evapotranspiration Irrigation Controllers
(American Society of Civil Engineers, 2012)Evapotranspiration-based irrigation controllers, also known as weather-based irrigation controllers, are a new water-saving technology that use evapotranspiration (ET) estimates to schedule irrigation. Many ET controllers ... -
Effect of Sprinkler Head Geometrical Parameters on Hydraulic Performance of Fluidic Sprinkler
(American Society of Civil Engineers, 2012)A new prototype of fluidic sprinkler is proposed in this paper. To determine the discharge coefficient (A), pattern radius (B), sprinkler rotation speed (C), droplet diameter distribution (D), and the radial application ... -
Hybrid Finite Analytic Solution for Computation of Spacing between Drains in Sloping Lands
(American Society of Civil Engineers, 2013)Rise in groundwater and salinity levels causes water congestion and soil salinization in the root zone of the crop, which adversely affects the growth and development process of plants, leading to reduced production. Thus, ... -
Head-Discharge Equation for Sharp-Crested Weir with Piecewise-Linear Sides
(American Society of Civil Engineers, 2012)This research presents a new weir section with -
Climate Change Impact on Reservoir Performance Indexes in Agricultural Water Supply
(American Society of Civil Engineers, 2013)This paper addresses the impact of climate change on the volume of inflow to a reservoir and the volume of downstream water demand by considering three climate change scenarios in an East Azerbaijan river basin. The HadCM3 ... -
Self-Organizing Gaussian-Based Downscaling of Climate Data for Simulation of Urban Drainage Systems
(American Society of Civil Engineers, 2013)Climate change and its impacts on hydrometeorological variables and surface runoff have been demonstrated in many investigations around the world. General circulation models (GCMs) are widely used in climate change studies; ... -
Closure to “Experimental Study on the Multisegment Regime of the Water Flow in Drip Emitters” by Wei Qingsong, Lu Gang, Wang Li, Zheng Jincan, Liu Jie, and Shi Yusheng
(American Society of Civil Engineers, 2012) -
Evaluation and Regional Calibration of Solar Radiation Prediction Models in Southern Spain
(American Society of Civil Engineers, 2012)Solar radiation ( -
New Method for Modeling Thin-Walled Orifice Flow under Partially Submerged Conditions
(American Society of Civil Engineers, 2012)Orifices are often used in stormwater detention facilities for reducing runoff peak flow and achieving extended detention times to improve water quality. Orifices often flow partially full; therefore, accurate and easily ... -
Developing DRAINMOD-Geostatistical Technology to Predict Nitrate Leaching
(American Society of Civil Engineers, 2013)In Egypt, the government has initiated large-scale projects to reuse drainage water to face the great challenges due to its limited water resources. Taking into consideration the environmental aspects of drainage water ... -
Ultrasonic Flow Measurement for Pipe Installations with Nonideal Conditions
(American Society of Civil Engineers, 2012)In the arid Western United States, water is among the most valuable resources. Typically, to successfully and accurately measure a flow rate using most types of flow meters, it is recommended that a straight section of ... -
Machine Learning Approaches for Error Correction of Hydraulic Simulation Models for Canal Flow Schemes
(American Society of Civil Engineers, 2012)Modernization of today’s irrigation systems attempts to improve system efficiency and management effectiveness of every component of the system (reservoirs, canals, and gates) using automation technologies, along with ... -
Uncertainty Characterization in the Design of Flow Diversion Structure Profiles Using Genetic Algorithm and Fuzzy Logic
(American Society of Civil Engineers, 2013)Flow diversion head works are constructed across rivers to divert flow into irrigation, navigation, or power generation channels. Hydraulic structures, such as weirs or barrages, are integral parts of these diversion head ... -
Expanding-Disk Rain Sensor Dry-Out and Potential Irrigation Savings
(American Society of Civil Engineers, 2012)Rain sensors are devices that connect to automatic irrigation systems to interrupt scheduled irrigation events as a result of rainfall. The objectives of this study were to evaluate the dry-out time of expanding-disk rain ... -
Crop Water Stress in Peach Orchards and Relationships with Soil Moisture Content in a Chernozem of Dobrogea
(American Society of Civil Engineers, 2013)This paper describes the crop water stress index (CWSI) related to the soil moisture content (SMC) in a chernozem of the Dobrogea region, Romania. The lower baselines (LBLs) for both sunny and shaded leaf conditions were ...