Journal of Hydraulic Engineering: Recent submissions
Now showing items 481-500 of 6886
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Galilean-Invariant Expression for Bernoulli’s Equation
(ASCE, 2020)The Bernoulli principle is one of the basic and most famous concepts in fluid mechanics, and the related equation is an extremely useful and effective tool in the solution of a wide range of practical engineering problems. ... -
Application of Free-Surface Immersed-Boundary Lattice Boltzmann Method to Waves Acting on Coastal Structures
(ASCE, 2020)A free-surface immersed-boundary lattice Boltzmann method for wave–structure interaction and hydrodynamic force estimation is introduced as a proposed model with example applications. The single-phase free-surface lattice ... -
Designing Experiments to Study Dam Breach Hydraulic Phenomena
(ASCE, 2020)The success of experimental studies to investigate hydraulics of dam breaching requires an adequate specification of geotechnical parameters and control over its realization in field or in laboratory conditions. Although ... -
Flow Resistance for a Varying Density of Obstacles on Smooth and Rough Beds
(ASCE, 2020)High-return-period floods involve complex flows over large floodplains covered with different types of resistive elements, from bed roughness to large emerging obstacles. In order to characterize the flow resistance in ... -
Experimental verification of the accuracy and robustness of Area Reconstruction Method for Pressurized Water Pipe System
(ASCE, 2020)In a previous paper, the authors proposed a transient-based area reconstruction method to identify multiple blockages in pipe systems without prior knowledge of their geometry and number, resulting in very accurate numerical ... -
Water Hammer Phenomenon in Pipeline with Inserted Flexible Tube
(ASCE, 2020)The purpose of this study is to analyze the effect that inserting an elastic tube into a pressure pipeline has on the water hammer phenomenon. This research draws upon theoretical analysis, experimental testing, and numerical ... -
Air Entrainment in Pipe-Filling Bores and Pressurization Interfaces
(ASCE, 2020)Certain closed conduits may undergo processes of rapid filling, in which the flow regime transits from open channel into pressurized flows. Air bubbles may be entrained through such pressurization interfaces, and this ... -
Prototype-Scale Investigation of Spillway Cavitation Damage and Numerical Modeling of Mitigation Options
(ASCE, 2020)This paper documents a prototype-scale investigation of cavitation damage to a newly resurfaced spillway being used operationally during phased construction work to replace all piers and radial gates. Initial concrete ... -
Conditional Turbulence Characteristics in Water-Worked and Screeded Gravel-Bed Flows
(ASCE, 2020)The conditional double-averaged streamwise velocity, spatially averaged (SA) turbulence and dispersive quantities in flows over a water-worked gravel bed (WGB), and a screeded gravel bed (SGB) were studied. The effects of ... -
Experimental Investigation into Outflow Hydrographs of Nonhomogeneous Earth Dam Breaching due to Overtopping
(ASCE, 2020)In this research, physical modeling of nonhomogeneous earth dams with clay cores was performed. The effects of dam slope, dimensions, and geometrical shape of the core, as well as the materials used for the core and body, ... -
Model for Bedload Transport under Waves
(ASCE, 2020)Properly modeling the sediment transport under water waves is critical to understanding morphodynamic processes such as, e.g., sandbar migration at beaches. In the last two decades, the influence of the wave asymmetries ... -
Scale Effects in Free-Flow Nonlinear Weir Head-Discharge Relationships
(ASCE, 2020)Using similitude relationships, laboratory-scale models have been used for decades to predict and confirm prototype hydraulic structure performance. For free-flow weir discharge conditions, gravity and inertia typically ... -
Experimental Study on Stormwater Geyser in Vertical Shaft above Junction Chamber
(ASCE, 2020)Stormwater geysers are commonly observed as explosive releases of air-water mixtures from municipal systems, which can cause property damages and human safety concerns. In Edmonton, Alberta, Canada, a number of geyser ... -
Settling Velocity of Porous Spherical Particles
(ASCE, 2020)An experimental study was conducted to better understand the settling velocity of porous spherical particles. Tests of the settlement of porous particles with porosity, ε, ranging from 0.53 to 0.86 in glycerol–water mixtures ... -
Multifactor Regression Analysis for Predicting Embankment Dam Breaching Parameters
(ASCE, 2020)Embankment dams are common worldwide, and the majority of past dam failures are related to such dams. It is imperative to improve the prediction accuracy of embankment dam failure to better estimate the potential impacts ... -
New Approach to Predicting Local Scour Downstream of Grade-Control Structure
(ASCE, 2020)Despite the numerous studies on scouring processes, the prediction of scour-hole dimensions downstream of hydraulic structures remains challenging because of the complexity of the phenomenon and its dynamic sensitivity to ... -
Identifying Head Accumulation due to Transient Wave Superposition in Pipelines
(ASCE, 2020)Fluctuations in pressures are part of the normal behavior of water distribution systems. The common perception is that transient events dissipate quickly in a network without significant consequences; however, under certain ... -
Expulsion of Entrapped Air in a Rapidly Filling Horizontal Pipe
(ASCE, 2020)Air expulsion from an end-of-pipe orifice in a rapidly filling horizontal pipe is investigated experimentally and analytically in order to more completely characterize the system’s transient response. In particular, images ... -
Free Surface Air Entrainment and Single-Bubble Movement in Supercritical Open-Channel Flow
(ASCE, 2020)There has been little study on the microscopic bubble entrainment and diffusion process on high-speed self-aerated flows, although the problem under investigation is theoretically important and has important engineering ... -
Three-Dimensional Numerical Study of Multiple Vertical Buoyant Jets in Stationary Ambient Water
(ASCE, 2020)In this paper, the mixing and dilution characteristics of vertical buoyant jets discharged from multiport diffusers are studied numerically. The performances of four different turbulence closures are investigated, including ...