Journal of Hydraulic Engineering: Recent submissions
Now showing items 941-960 of 6886
-
Comprehensive and Quality-Controlled Bedload Transport Database
(American Society of Civil Engineers, 2017)The processes involved in bed-load sediment transport are complex and difficult to quantify. Field measurements provide insight and a chance to improve predictive methods. A comprehensive database is described that contains ... -
Spatial and Temporal Growth of Perturbations in Open-Channel Viscous Transverse Shear Flow
(American Society of Civil Engineers, 2016) -
Blockage and Leak Detection and Location in Pipelines Using Frequency Response Optimization
(American Society of Civil Engineers, 2017) -
Parallel Computation of a Dam-Break Flow Model Using OpenACC Applications
(American Society of Civil Engineers, 2017)Two key factors in dam-break modeling are accuracy and speed. Therefore, high-performance calculations are of great importance to the simulation of dam-break events. In this study, we develop a two-dimensional hydrodynamic ... -
Estimation of Hydraulic Roughness of Concrete Sewer Pipes by Laser Scanning
(American Society of Civil Engineers, 2017) -
Statistical Description on the Role of Turbulence and Grain Interference on Particle Entrainment from Gravel Beds
(American Society of Civil Engineers, 2017)A complete understanding of the role of grain-scale particle-flow interaction in sediment entrainment and transport has still not been achieved in spite of recent technological advancement in measurement capabilities. In ... -
Hydraulic Behavior and Performance of Breastshot Water Wheels for Different Numbers of Blades
(American Society of Civil Engineers, 2017)Thanks to their efficiency and simplicity of contruction, breastshot water wheels represent an attractive low head hydropower converter. In this work, a breastshot wheel is investigated by numerical simulations, and the ... -
Stochastic Solution to the Water Hammer Equations Using Polynomial Chaos Expansion with Random Boundary and Initial Conditions
(American Society of Civil Engineers, 2017) -
Coupled Hydraulic and Electronic Regulation of Cross-Flow Turbines in Hydraulic Plants
(American Society of Civil Engineers, 2017)The potential benefit of coupling hydraulic and electronic regulation to maximize the energy production of a cross-flow turbine in hydraulic plants is analyzed and computed with reference to a specific case. Design criteria ... -
Flow and Bed-Shear Magnification Downstream of a Barrage with Swirl Generated in Ducts by Stators and Rotors
(American Society of Civil Engineers, 2017)In this paper, the flow and bed shear stresses downstream of a tidal barrage, with open ducts and with swirl created by stators and rotors, are investigated experimentally. The wake created by open ducts is significantly ... -
History of the Torricelli Principle and a New Outflow Theory
(American Society of Civil Engineers, 2016)Forum papers are thought-provoking opinion pieces or essays founded in fact, sometimes containing speculation, on a civil engineering topic of general interest and relevance to the readership of the journal. The views ... -
Submerged Hydraulic Jump Study Using DES
(American Society of Civil Engineers, 2017) -
Erratum for “Hydraulic Transients in Viscoelastic Branched Pipelines” by Stefania Evangelista, Angelo Leopardi, Roberto Pignatelli, and Giovanni de Marinis
(American Society of Civil Engineers, 2016) -
Water Column Separation and Cavity Collapse for Pipelines Protected with Air Vacuum Valves: Understanding the Essential Wave Processes
(American Society of Civil Engineers, 2017)Elevated high points along a pipeline profile are the most common places where air vacuum valves (AVVs) are installed. This paper uses basic water hammer theory to semianalytically explore the effects of such AVVs. A simple ... -
Prediction of the Cross-Flow Turbine Efficiency with Experimental Verification
(American Society of Civil Engineers, 2017)Recent experimental studies suggest that the usual way of measuring and predicting the efficiency of the cross-flow turbine do not describe the flow physics adequately. This verification led to the present investigation ... -
Numerical Modeling for Periodic Oscillation of Free Overfall in a Vertical Drop Pool
(American Society of Civil Engineers, 2017) -
Experimental Study Exploring the Interaction of Structural and Leakage Dynamics
(American Society of Civil Engineers, 2017)Strategies for managing leakage from water distribution systems require the ability to effectively evaluate such real losses through the understanding of the behavior of individual leaks, including their response to changes ... -
Antecedent Bottom Conditions of Reservoirs as Key Factors for High Turbidity in Muddy Water Caused by Storm Rainfall
(American Society of Civil Engineers, 2017)To facilitate administrators’ abilities to handle reservoir operations, factors on how muddy water was formed inside the reservoir should be identified. According to field observation data, during typhoon events, there ... -
Experimental Investigation of Nonlinear Flow Characteristics of Real Rock Joints under Different Contact Conditions
(American Society of Civil Engineers, 2017)Laboratory experiments were conducted on three artificial rock joints with natural characteristics to study the nonlinear fluid flow characteristics in a single joint under different contact conditions. A noncontact, ... -
Hydrodynamics of Gravity Currents Down a Ramp in Linearly Stratified Environments
(American Society of Civil Engineers, 2017)Gravity currents play an important role in many aspects of natural processes and engineering practice. This paper presents a systematic lock-exchange experimental study to investigate the influence of linearly stratified ...