Journal of Hydraulic Engineering: Recent submissions
Now showing items 661-680 of 6886
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Turbulence Characteristics of Classical Hydraulic Jump Using DES
(American Society of Civil Engineers, 2018)This paper performs a three-dimensional, unsteady, detached-eddy simulation (DES) of a classical hydraulic jump with an inlet Froude number of 8.5. The volume of fluid (VOF) method with a high-resolution interface capturing ... -
Effects of Upstream Weir Slope on Local Scour at Submerged Weirs
(American Society of Civil Engineers, 2018)The variation of upstream slope of a submerged weir could significantly alter the local flow pattern and sediment transport. This paper presents an experimental investigation into local scour at submerged weirs with different ... -
Nappe Oscillations on Free-Overfall Structures: Experimental Analysis
(American Society of Civil Engineers, 2018)Under relatively low heads, the occurrence of nappe oscillation, also known as nappe vibration, may be observed on hydraulic structures with a free overfall, such as weirs, crest gates, and fountains. This phenomenon is ... -
Prediction of Organic Combined Sewer Sediment Release and Transport
(American Society of Civil Engineers, 2018)Accurate predictions of sediment loads released by sewer overflow discharges are important for being able to provide protection to vulnerable receiving waters. These predictions are sensitive to the estimated sediment ... -
Untitled
(American Society of Civil Engineers, 2018)This study used fully spatially distributed three-dimensional (3D) velocity data for the improved calibration of a 3D hydrodynamic model. The conventional calibration methods do not account for the spatial distribution of ... -
Resistance of Open-Channel Flow under the Effect of Bending Deformation of Submerged Flexible Vegetation
(American Society of Civil Engineers, 2018)The resistance of an open-channel flow under the influence of bending deformation of submerged flexible vegetation canopy was experimentally studied in an indoor water flume. Altogether, 27 tests under the cross-combinations ... -
Channel Geometry Controls Downstream Lags in Sediment Rating Curves
(American Society of Civil Engineers, 2018)In transport-limited alluvial streams, the suspended sediment concentration C exhibits power functional relationships with the flow discharge Q at a given station. Once the power-law C-Q relationships at multiple stations ... -
Incorporating the Modified Orifice Equation into Pipe Network Solvers for More Realistic Leakage Modeling
(American Society of Civil Engineers, 2018)It has been well established in several experimental and modeling studies that leak areas are often not fixed, but vary as linear functions of pressure. Replacing this linear equation into the orifice equation results in ... -
Toward Flood Routing in Natural Rivers
(American Society of Civil Engineers, 2018)Floods in rivers can be modeled with one dimensional flood routing methods, which include an approximate solution of the one-dimensional (1D) Saint-Venant momentum equation and a solution of the corresponding mass conservation ... -
3D Numerical Modeling of Geyser Formation by Release of Entrapped Air from Horizontal Pipe into Vertical Shaft
(American Society of Civil Engineers, 2018)Geysers are explosive eruptions of air-water mixture from manholes in drainage systems. When the design capacity of urban storm water drainage systems is exceeded during extreme rainfall, rapid inflows into the drainage ... -
Numerical and Experimental Modeling of Levee Breach Including Slumping Failure of Breach Sides
(American Society of Civil Engineers, 2018)The overtopping failure of noncohesive earthen levees was investigated by considering sediment transport by flowing water and including slumping failure due to slope instability. The breach-shape evolution and breach ... -
Vortex Structure and Sediment Deposition in the Wake behind a Finite Patch of Model Submerged Vegetation
(American Society of Civil Engineers, 2018)A submerged patch of finite-width vegetation may produce vortex structures in its wake in both the vertical and horizontal planes. This experimental study used velocity and deposition measurements and flow visualization ... -
Air–Water Flow Patterns of Hydraulic Jumps on Uniform Beds Macroroughness
(American Society of Civil Engineers, 2018)Hydraulic jumps are characterized by strong flow turbulence, flow aeration, and three-dimensional flow motions. Whereas comprehensive research into hydraulic jumps on smooth bed has improved the understanding of flow ... -
Logarithmic Law for Transport Capacity of Nonuniform Sediment
(American Society of Civil Engineers, 2018)Sediment transport capacity is one of the key parameters in river sediment dynamics. New formulas for fractional and total transport capacity for nonuniform sediment were established and are presented in this paper, based ... -
Experimental Investigation of Air–Water Flow Properties of Offset Aerators
(American Society of Civil Engineers, 2018)Although chute aerators have been investigated experimentally by many researchers, only a few studies have been conducted on the comprehensive air–water flow properties of the lower jet downstream chute aerators. In this ... -
CFD Methodology to Determine the Hydrodynamic Roughness of a Surface with Application to Viscous Oil Coatings
(American Society of Civil Engineers, 2018)Water-lubricated pipe flow technology is an economic alternative for the long-distance transportation of viscous oils, such as heavy oil and bitumen. In the industrial-scale application of this technology, a thin oil film ... -
Closure to “Uncertainty Analysis of Pipe-Network Hydraulics Using a Many-Objective Particle Swarm Optimization” by Adell Moradi Sabzkouhi and Ali Haghighi
(American Society of Civil Engineers, 2018) -
Simulation of Water Temperature by Using Urban Lake Temperature Model
(American Society of Civil Engineers, 2018)Water temperature models of urban lakes may fail to reproduce thermal characteristics if the reduction of wind field attributable to sheltering along the banks is not considered. To quantify the effect of wind sheltering, ... -
Closure to “Hydraulic Performance of Embankment Weir with Rough Crest” by Stefan Felder and Nushan Islam
(American Society of Civil Engineers, 2018) -
Refinement Indicator for Dynamic-Mesh Adaption in Three-Dimensional Shallow-Water Equation Modeling
(American Society of Civil Engineers, 2018)One of the basic articles of discretization-based numerical modeling of three-dimensional shallow water equations is the spatial convergence of the mesh utilized. The process of creating a spatially converged mesh involves ...