Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 341-360 of 3826
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Zonal and Overall Discharge Prediction Using Momentum Exchange in Smooth and Rough Asymmetric Compound Channel Flows
(ASCE, 9/1/2020 1)The apparent shear stress acting on the vertical interface between floodplain(s) and main channel has been shown to be very influential for the estimation of the zonal and overall discharge in compound channels. Experimental ... -
Linking the Kinetic Energy Fraction and Equivalent Length Method for Trickle Irrigation Design Under Local Losses
(ASCE, 8/1/2020 1)New methods using analytical relationships to design drip irrigation laterals and subunits have been introduced in recent years based on the assumption that minor losses can be neglected. This assumption could be relaxed ... -
Evaluating the Applicability of Drainage Routing Schemes for Paddy Fields
(ASCE, 9/1/2020 1)Paddy fields play a critical role as storage for the retention of surface water in hydrological processes, but their water balance is complicated by irrigation and drainage management. Studies have proposed flow routing ... -
Flow Characteristics of a Drop Manhole with an Internal Hanging Baffle Wall in a Storm Drainage System: Numerical and Experimental Modeling
(ASCE, 8/1/2020 1)In urban drainage networks, manhole structures are used to dissipate energy and to decrease flow velocity, especially in steep slope areas. The purpose of this study is the numerical and experimental modeling of a new drop ... -
Simulation and Optimization of Venturi Injector by Machine Learning Algorithms
(ASCE, 8/1/2020 1)This paper discusses the problem of low injection rates from Venturi injectors. The optimal combination of key structural parameters for Venturi injectors was investigated using a simulation software platform based on ... -
Pressure Distribution on Center Pivot Lateral Lines: Analytical Models Compared to EPANET 2.0
(ASCE, 8/1/2020 1)The analysis of friction head-loss spatial distribution along center pivot lateral lines represents an important step when evaluating energy-use efficiency of center pivot irrigation systems. This work compares head-loss ... -
Application of Particle Densimetric Froude Number for Evaluating the Maximum Culvert Scour Depth
(ASCE, 8/1/2020 1)This paper presents a compilation of a large database consisting of 588 culvert scour experiments covering a wide combination of different culvert shapes, culvert outlet conditions, and sediment properties. The analysis ... -
Analytical Methodology for the Discharge-Stage Relation of Flexible Shape Palmer-Bowlus Flumes
(ASCE, 8/1/2020 1)The flexible shape Palmer-Bowlus flume is a simple device for flow measurement in free-surface flow circular channels and conduits. In this study, the discharge-stage relation for Palmer-Bowlus flumes is determined based ... -
Prediction of Pressure–Discharge Curves of Trapezoidal Labyrinth Channels from Nonlinear Regression and Artificial Neural Networks
(ASCE, 8/1/2020 1)Emitters are important components of drip irrigation systems, and the use of labyrinths as a mechanism of energy dissipation stands out in the drippers’ design. Relating the geometric characteristics of labyrinths with ... -
Experimental Investigation of One-Cycle Triangular Labyrinth Weirs with an Upstream Pool
(ASCE, 7/1/2020 1)The hydraulic performance of triangular labyrinth weirs with an upstream pool was experimentally studied in both free and submerged flow conditions. The discharge coefficients based on channel width B and the weir length ... -
Improving the Drainage and Irrigation Efficiency of Lowland Soils: Land-Forming Options for Southern Brazil
(ASCE, 8/1/2020 1)Land leveling is used to correct soil surface irregularities to improve surface drainage and irrigation. It also makes the area more manageable for an array of agricultural activities such as planting and harvesting. The ... -
Correcting the Edge Effect for Sensor Spatial Response in Evapotranspiration Estimation through Remote Sensing
(ASCE, 7/1/2020 1)Recent advances in remote-sensing technology using multispectral images provide a powerful tool to estimate crop-water evapotranspiration (ET) at the watershed scale with large spatial and temporal precision. However, most ... -
Comparison of Orange Orchard Evapotranspiration by Eddy Covariance, Sap Flow, and FAO-56 Methods under Different Irrigation Strategies
(ASCE, 7/1/2020 1)The study evaluates the accuracy of measured and estimated crop evapotranspiration fluxes (ETc) on Citrus in a semiarid Mediterranean climate (Sicily, Italy). Specifically, ETc rates derived from in situ techniques [eddy ... -
Experimental Investigation of Curved Trash Screens
(ASCE, 6/1/2020 1)Conventional trash screens are widely used to prevent debris from being transported to downstream reaches of waterways and to allow safe passage along the same waterways. However, debris accumulation at the screens can ... -
Modified Model for Simulating Water Flow in Furrow Irrigation
(ASCE, 6/1/2020 1)Quantifying surface and subsurface water dynamics is essential to design and manage furrow irrigation systems. Many furrow irrigation models estimate infiltration using empirical functions without considering the variable ... -
Evaporation Losses and Evapotranspiration Dynamics in Overhead Sprinkler Irrigation
(ASCE, 8/1/2020 1)A comprehensive review of evaporation losses and evapotranspiration (ET) dynamics in sprinkler irrigation revealed substantial differences in the magnitudes of the different components of evaporation. Field studies reported ... -
The Bell-Shaped Unit Hydrograph for Overland Planes
(ASCE, 5/1/2020 1)This study presents a conceptual model to obtain the shape of the unit hydrograph in a small rectangular basin with a collecting channel on one side of the flow plane. In classical hydrology, flows are classified as linear, ... -
Exploring the Potential of Temperature-Based Methods for Regionalization of Daily Reference Evapotranspiration in Two Spanish Regions
(ASCE, 3/1/2020 1)Climatological data for 101 stations in Catalonia and Navarre in northeastern Spain were used for comparing estimates of daily reference evapotranspiration (ETo) by several temperature-based methods against daily estimates ... -
Effect of Water Shortage and Pollution of Irrigation Water on Water Reuse for Irrigation in the Nile Delta
(ASCE, 2/1/2020 1)Agricultural drainage water (ADW) reuse is the most promising option to increase the availability of water for irrigation. The pollution of drainage networks and the Nile River water supply shortage threaten the largest ... -
Multipoint High-Frequency Sampling System to Gain Deeper Insights on the Fate of Nitrate in Artificially Drained Fields
(ASCE, 1/1/2020 1)The application of high-frequency measurements could potentially enhance current understanding of the hydrology and biogeochemistry of artificially drained agricultural lands. In addition to intensive drainage flow ...