Journal of Hydraulic Engineering: Recent submissions
Now showing items 801-820 of 6886
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Theory of Turbulent Flow over a Wavy Boundary
(American Society of Civil Engineers, 2016)A new mathematical framework of the steady unseparated turbulent flow over a wavy (sinusoidal) boundary is derived by treating the Reynolds averaged Navier-Stokes (RANS) equations. Theoretical formulations for the flow ... -
Evaluation of Sediment Diversion Design Attributes and Their Impact on the Capture Efficiency
(American Society of Civil Engineers, 2016)Many riverine systems have been disconnected from their receiving basins by flood-protection levees and other engineered systems. Reconnecting these alluvial rivers with their receiving basins is a viable option to nourish ... -
Efficient Method for Coupling Field Data and Numerical Modeling for the Estimation of Transverse Mixing Coefficients in Meandering Rivers
(American Society of Civil Engineers, 2016)A numerical model has been developed employing an orthogonal stream-tube gridding system for the investigation of mixing patterns in meandering rivers. The proposed model couples field data and modeling. It uses a measured ... -
Comparison of Sediment Load and Riverbed Scour during Floods for Gravel-Bed and Sand-Bed Reaches of Intermittent Rivers: Case Study
(American Society of Civil Engineers, 2016)Hydraulic scour is one of the major causes of bridge and embankment failure during typhoon-induced or monsoon-induced floods in steep intermittent rivers in Taiwan. In this study, field data for sediment load and riverbed ... -
Side Weir Flow on a Movable Bed
(American Society of Civil Engineers, 2016)Side weirs are hydraulic structures widely used for flow control in rivers and canals. Whenever the water level rises above the side weir crest elevation, a fraction of the main flow is diverted so that the water discharge ... -
Water Surface Characteristics of Submerged Rectangular Sharp-Crested Weirs
(American Society of Civil Engineers, 2016)Laboratory experiments were carried out to investigate the water surface characteristics of submerged flow over sharp-crested weirs. Interesting observations were made on the water surface profiles near the weir as weir ... -
A Particle Tracking Model for Sedimentation from Buoyant Jets
(American Society of Civil Engineers, 2016)Sediment-laden turbulent buoyant jets are commonly found in natural and engineered environments. Examples include volcanic eruptions, deep sea hydrothermal vents, discharge of partially-treated wastewater, and dredging ... -
Simple Design Criterion for Residual Energy on Embankment Dam Stepped Spillways
(American Society of Civil Engineers, 2016)The stepped spillway design is associated with significant flow resistance and associated energy dissipation on the steps, yielding smaller, more economical downstream dissipation structures. A number of design guidelines ... -
Spurious Numerical Oscillations in the Preissmann Slot Method: Origin and Suppression
(American Society of Civil Engineers, 2016)This paper investigates the source of the spurious numerical oscillations often observed in simulations using the well-known Preissmann slot method and proposes a nonoscillatory numerical fix that can efficiently suppress ... -
Propeller Jet–Induced Suspended-Sediment Concentration
(American Society of Civil Engineers, 2016)When subjected to a strong swirling jet flow induced by a rotating ship’s propeller, the bed of a waterway may undergo significant changes. These changes will not only cause instability to quay structures and damage the ... -
Free Surface Axially Symmetric Flows and Radial Hydraulic Jumps
(American Society of Civil Engineers, 2016)Free surface, axially symmetric shallow flow is analyzed in both the centrifugal and centripetal directions. Referring to the inviscid steady flow over a flat plate characterized by a unique value of specific energy, the ... -
Upstream Hydraulics of a Run-of-the River Hydropower Facility for Fish Entrainment Risk Assessment
(American Society of Civil Engineers, 2016)Run-of-the-river hydropower is a typical form of power generation in mountainous regions. This study investigates the velocity field upstream of Aberfeldie dam, a run-of-the river facility on the Bull River near Wardner, ... -
Clear-Water Scouring Process in a Flow in Supercritical Regime
(American Society of Civil Engineers, 2016)The aim of this research is to measure the clear-water scouring produced by supercritical flow around a rectangular-shaped obstacle. The initial uniform flow condition without the obstacle is such that the Shields parameter ... -
Dam-Break Flood Model Uncertainty Assessment: Case Study of Extreme Flooding with Multiple Dam Failures in Gangneung, South Korea
(American Society of Civil Engineers, 2016)Dam safety programs are informed by numerical model solutions of dam-break flood depth, extent, and timing that are uncertain owing to an imperfect mathematical and numerical representation of system dynamics as well as ... -
Using Numerical and Physical Modeling to Evaluate Total Scour at Bridge Piers
(American Society of Civil Engineers, 2016)The contraction scour resulting from a two-dimensional (2D) mobile bed numerical model is superimposed on the local scour measured on a large scale mobile bed physical model to evaluate the total scour at bridge piers. ... -
Closure to “Three-Dimensional Numerical Modeling of Dam-Break Flows with Sediment Transport over Movable Beds” by Reza Marsooli and Weiming Wu
(American Society of Civil Engineers, 2016) -
Review of <i>Hans Albert Einstein: His Life as a Pioneering Engineer</i> by Robert Ettema and Cornelia F. Mutel
(American Society of Civil Engineers, 2016) -
Numerical Investigation of the Influence of Viscoelastic Deformation on the Pressure-Leakage Behavior of Plastic Pipes
(American Society of Civil Engineers, 2016)It has been well established that leakage from pipes is more sensitive to changes in pressure than the square root relationship predicted by the orifice equation. The main reason for this is that leak areas are not static, ... -
One-Dimensional Riemann Solver Involving Variable Horizontal Density to Compute Unsteady Sediment Transport
(American Society of Civil Engineers, 2016)Intense transient shallow flows over erodible bed imply the appearance of a changing horizontal density attributable to the presence of sediment particles in the water layer. The lack of consideration of the variability ... -
Simulation of Scour around a Vibrating Pipe in Steady Currents
(American Society of Civil Engineers, 2016)A vertical two-dimensional numerical model is employed to study the scour beneath a vibrating pipe exposed to steady currents. The ability of the model is first validated against previous scour experiments concerning both ...