Journal of Hydraulic Engineering: Recent submissions
Now showing items 141-160 of 6886
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Flow Nonuniformity and Energy Dissipation in Moderate-Sloped Stepped Chutes with a Labyrinth Crest
(American Society of Civil Engineers, 2024)In recent years, the rehabilitation of spillways and design of new dam constructions have considered the combination of a stepped chute with a labyrinth weir crest, highlighting the need for hydraulic information for this ... -
Unveiling the Dynamics of Hydrosuction Sediment Removal: Insight into Flow Characteristics, Flow Profile, and Critical Suction Velocity
(American Society of Civil Engineers, 2024)This study aimed to investigate the critical suction velocity required for lifting sediment off the bed under hydrosuction. Flow characteristics below the suction pipe under unbound and bound conditions were studied ... -
Laboratory Measurements of Hydraulic Jacking Uplift Pressure at Offset Joints and Cracks
(American Society of Civil Engineers, 2024)Hydraulic jacking is a serious threat to concrete spillway chutes, demonstrated by the catastrophic spillway chute failure at California’s Oroville Dam in 2017. To improve the understanding of uplift pressure and joint ... -
Air Flow in Sanitary Sewer Laterals
(American Society of Civil Engineers, 2024)Air in the headspace of sewer laterals can be driven by the flowing sewage as well as air pressure. In this study, the openings on manholes for air flow are approximated as a thin continuous slot at the laterals. In this ... -
Interaction between Pier Scour and Other Components of Scour under Clear-Water Conditions
(American Society of Civil Engineers, 2024)Interaction between various components of bridge scour is a complex phenomenon. Bridge submergence during high flooding leads to the scour mechanisms becoming even more complex. Thus, to find the interaction between various ... -
Experimental Study on Landslide-Generated Waves Overtopping in Reservoirs with Arch Dams
(American Society of Civil Engineers, 2024)The overtopping process, resulting from landslide-induced waves, has the potential to cause significant damage to downstream infrastructures. To minimize the associated losses, it is essential to study the overtopping ... -
Implementation of Standardized Uncertainty Analysis for Streamflow Measurements Acquired with Acoustic Doppler Velocimeters
(American Society of Civil Engineers, 2024)This paper discusses a full-fledged uncertainty analysis implementation using the Guide to the Expression of Uncertainty in Measurement (GUM) as framework. Currently, there are few examples of rigorous GUM implementations ... -
Self-Cleaning Ability of the Piano Key Weir with Driftwood Blockages
(American Society of Civil Engineers, 2024)The piano key weir has been successfully used to address discharge deficiencies and site limitations for run-of-river structures and new and existing spillways, serving as an economical alternative to traditional weirs. ... -
Reynolds Stress Model Study Comparing the Secondary Currents and Turbulent Flow Characteristics in High-Speed Narrow Open Channel and Duct Flows
(American Society of Civil Engineers, 2024)This study numerically investigates and compares the secondary currents, velocity dips, turbulence properties, and boundary shear stresses in supercritical narrow open channel flows (OCFs) and in narrow duct flows (DFs) ... -
Impact of Interpolation on Numerical Properties of the Method of Characteristics Used for Solution of the Transient Pipe Flow Equations
(American Society of Civil Engineers, 2024)This paper presents a comparison of numerical properties of the fixed-grid method of characteristics resulting from space and time linear interpolation used for the solution of transient flow in pipe equations. Modified ... -
Numerical Study of Scour beneath Sagging Cylinders and Spheres
(American Society of Civil Engineers, 2024)Offshore structures are deployed extensively to harvest marine resources. Due to the harsh marine environments and heavy-duty working conditions, the risks associated with failure due to scour are high, and the need for ... -
Sediment Transport and Bed Topography for Realistic Unsteady Flow Hydrographs of Varying Length in a Laboratory Flume
(American Society of Civil Engineers, 2024)Complex interactions between flowing water and bedforms in rivers with sand beds during changing flow rates may result in bedforms, flow resistance, and sediment transport rates that differ on the rising and falling limbs ... -
Analytical Solution for the Steady Seepage Field of a Circular Cofferdam in Nonhomogeneous Layered Soil
(American Society of Civil Engineers, 2024)The analytical solution of the steady-state seepage field of a circular cofferdam in nonhomogeneous layered soil of finite depth is derived, including the head function, exit hydraulic gradient formula, and seepage flow ... -
Effect of Transversal Bed Slope on the Equilibrium Scour Depth at Bridge Piers
(American Society of Civil Engineers, 2024)This study focused on the effect of the transversal bed slope on scouring at bridge piers. Twenty-four experiments were conducted, half of them being on a horizontal bed and the other half on inclined beds. Three inclination ... -
New Method to Calculate Friction Velocity in Smooth Channel Flows Using Direct Numerical Simulation Data
(American Society of Civil Engineers, 2024)In this paper, we leverage the direct numerical simulation (DNS) data for closed-channel flow for a range of friction Reynolds number (Reτ∼180–5,000) to develop a new one-point friction velocity method (OPFVM) to calculate ... -
Randomly Supported Variations of Deterministic Models and Their Application to One-Dimensional Shallow Water Flows
(American Society of Civil Engineers, 2024)This paper deals with the prediction of flows in open channels. For this purpose, models based on partial differential equations are used. Such models require the estimation of constitutive parameters based on available ... -
Drag Coefficient of Rigid and Flexible Deciduous Trees in Riparian Forests
(American Society of Civil Engineers, 2024)Considerable parts of riparian forests around the world are covered by deciduous trees and tall shrub species with rigid trunk and flexible-broadleaf. Experiments are conducted on artificial rigid and flexible models to ... -
Influence of Bioroughness Density on Turbulence Characteristics in Open-Channel Flows
(American Society of Civil Engineers, 2024)Bioroughness plays an important role in modifying the velocity and sediment flux near the riverbed. It is therefore pertinent to study the influence of benthic fauna on the bed forms. To this end, large-eddy simulations ... -
Influence of Debris Jam Formed by Trees on Bridge Pier Scour
(American Society of Civil Engineers, 2024)Debris jams contribute to bridge pier failures. Previous investigations showed that a debris jam can constrict the flow cross section, enhance flow intensity, and result in significant scour. Physical modeling was conducted ... -
Characterizing Flow Patterns and Velocities in a Backwater Valve Using Fluorescent Particle Tracers for Image Velocimetry
(American Society of Civil Engineers, 2024)Flooding in urban communities is an increasingly prevalent issue that causes significant financial loss, property damage, and long-term adverse health effects. Backwater valves can reduce the risk of basement flooding ...