Journal of Irrigation and Drainage Engineering: Recent submissions
Now showing items 181-200 of 3826
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Optimal Sprinkler Spacing for a Mini Center Pivot System
(ASCE, 2022/11/01)This paper offers a new model for determining the optimal spacing of mini center pivot system (MCPS) nozzles for high water application uniformity. The strengths of the study included an in-depth analysis of optimum nozzle ... -
Machine-Learning Models to Improve Accuracy of Real-Time Reference Evapotranspiration Estimates in an Arid Environment
(ASCE, 2022/11/01)Studies of the estimation of reference evapotranspiration (ET0) in Iran are mostly related to areas with humid and semiarid climates and less related to arid areas. On the other hand, few studies in arid regions have ... -
Three-Dimensional Numerical Simulation of the Flood-Wave Propagation
(ASCE, 2022/11/01)The present paper attempts to study the flood wave propagation at a right-angled -
A Semicoupled Shallow-Water Model for Vertical Velocity Distribution in an Open Channel with Submerged Flexible Vegetation
(ASCE, 2022/09/01)This study detailed a novel semicoupled method for estimating the three-dimensional vertical velocity profile in an open channel with submerged flexible vegetation. A modified form of the two-dimensional shallow water ... -
Air–Water Flows and Head Losses on Stepped Spillways with Inclined Steps
(ASCE, 2022/11/01)On a stepped spillway, the staircase invert profile generates some intense turbulent dissipation during the spill, associated with a significant reduction of kinetic energy, as well as strong self-aeration. The present ... -
Application of Semiautomated CFD-Based Flow Rating Approach to Hydraulic Structures in South Florida
(ASCE, 2022/09/01)This technical note introduces a computational fluid dynamics (CFD)-based semiautomated flow rating methodology for hydraulic structures in South Florida. The approach uses the ANSYS Workbench, CFD code FLUENT, IronPython, ... -
An Online Data-Driven Evolutionary Algorithm–Based Optimal Design of Urban Stormwater-Drainage Systems
(ASCE, 2022/11/01)To reduce flood risk in urban areas, an optimal design of drainage networks for urban areas is essential for flooding control and drainage management of the urban stormwater drainage system (USDS). A conventional design ... -
Minimum Rainfall for Applying the Curve-Number Method
(ASCE, 2022/08/01)In engineering practice the curve-number method is sometimes inappropriately applied to low-rainfall events, thereby ignoring the dependence of the curve number on the rainfall amount. Lack of adjustment of the curve number ... -
Effects of Geometrical Parameters on Labyrinth Weir Hydraulics
(ASCE, 2022/10/01)The effects of geometrical parameters (crest height, number of cycles, and plan weir configuration), are investigated experimentally on labyrinth weirs, over a range of headwater ratios of 0.1 to 0.6. Trapezoidal and ... -
Explicit Solution for Pipe Diameter Problem Using Lambert <i>W</i>-Function
(ASCE, 2022/07/04)Determining the pipe diameter is one of the principal problems encountered in designing and analyzing pipe flow lines. However, the direct determination of a pipe’s diameter is not possible because of the implicit form of ... -
Design of Tailwater Recovery Systems Accounting for Irrigation System Operation and Performance
(ASCE, 2022/06/29)The design of tailwater recovery system design for furrow irrigation was examined. The analysis expands on procedures developed by previous authors and aims to account for the operation and performance of the irrigation ... -
Assessment of Groundwater Quality under Changing Climate in Ngorongoro Conservation Area, Tanzania
(ASCE, 2022/07/18)Understanding the hydrochemical composition of water resources in the Ngorongoro Conservation Area (NCA, Dodoma, Tanzania) related to climate variability is essential for sustainable development. Thus, the current study ... -
Transverse Nonuniformity of Air–Water Flow and Lateral Wall Effects in Quasi-Two-Dimensional Hydraulic Jump
(ASCE, 2022/07/18)Flow field characterization in high-aerated flows often involves flow imaging techniques through transparent sidewalls, and the results may be subject to sidewall effects and thus differ from the central flow behaviors. ... -
Risk Assessment of Storm Sewers in Urban Areas Using Fuzzy Technique and Monte Carlo Simulation
(ASCE, 2022/06/13)In the task of storm sewer design, the accuracy of the method of choice for estimating the risk value is not a trivial task, because it improves the safety and effectiveness of the entire system. Hence, two methods for ... -
Numerical Investigation of the Plunging and Vortex-Flow Regimes Occurring in Drop Shafts with a Tangential Intake
(ASCE, 2022/06/02)Dropshafts are commonly used as flood discharge structures in urban drainage systems and hydraulic structures. Plunging and vortex flows are the two main flow regimes occurring in the dropshaft with a tangential intake. ... -
Analyzing the Effects of Irrigation on the Sensitivity and Estimability of Soil Hydraulic Parameters
(ASCE, 2022/05/02)Parameter estimation is a significant aspect of modeling flow through porous media. To avoid any nonuniqueness issues in parameters estimation, it is important to have a deep understanding of the information content and ... -
Optimization Design Method of a Large-Scale Multilevel Gravity Drip Irrigation Pipe Network System Based on Atom Search Optimization
(ASCE, 2022/05/02)A multilevel drip irrigation system generally uses a first-level pivot as the water source. The water is delivered to each head pivot in the field drip irrigation subsystems through the main water distribution pipe network ... -
Fuzzy Number Linear Programming Technique for Design of Rectangular Canals
(ASCE, 2022/06/07)Despite many deterministic approaches for the optimal design of a canal already proposed, a methodology capable of considering the risk value when there is uncertainty in flow estimation is still lacking. In real engineering ... -
The Effect of Spray-Sprinkler Design Parameters on Energy Consumption Using Computational Fluid Dynamics
(ASCE, 2022/05/10)To determine the kinetic energy consumption of various spray-sprinkler structural parameters, the hydraulic performance, including the discharge and initial trajectory velocity, was investigated using computational fluid ... -
Turbulent Flow in a Central Vertical Slot Fishway: Numerical Assessment with RANS and LES Schemes
(ASCE, 2022/05/11)The application of numerical models for fishway flow enables an improved comprehension of the turbulent flow structure, which is an important covariate used to explain fish passage. Reynolds-averaged Navier–Stokes (RANS) ...