Journal of Hydraulic Engineering: Recent submissions
Now showing items 341-360 of 6886
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Infill Mobility through Engineered Synthetic Turf on Steep Slopes
(ASCE, 8/1/2021)Understanding the complex flow and sediment transport on vegetated slopes is important for ecological restoration and conservation projects. This study quantifies the erodibility of sand infill through densely vegetated ... -
Bubble Plume Integral Model for Line-Source Diffusers in Ambient Stratification
(ASCE, 5/1/2021)We developed an integral plume model to simulate the behavior of bubble plumes generated from line-source geometry in stratified ambient reservoirs by adapting the double-plume integral model developed for point-sources ... -
Identifying Flow Patterns in Water Pipelines Using Complex Network Theory
(ASCE, 6/1/2021)Air pockets trapped in water pipelines are a common phenomenon and can lead to different air-water two-phase flow patterns: stratified, blowback, plug, and bubbly flows. The two former flows contain a large amount of air ... -
Experimental and Numerical Study on Scour-Protection Methods in a Stilling Basin: Case Study of Chancy-Pougny Dam
(ASCE, 6/1/2021)Chancy-Pougny is a run-of-river dam on the Swiss–French border constructed in the early 1920s. Since its commissioning, the operation of the four spillway gates has been responsible for a progressive erosion of the stilling ... -
Air Entrained in Flow along a Steep-Stepped Spillway: Data and Insights from a Hydraulic Model
(ASCE, 5/1/2021)Data and insights are presented on air entrainment in a hydraulic model of the stepped spillway for Gross Dam, Colorado, soon to be the tallest stepped spillway in the United States. The spillway’s chute was steep (2.0V:1.0H) ... -
Dam-Break Modeling: LBM as the Way towards Fully 3D, Large-Scale Applications
(ASCE, 5/1/2021)Free-surface flows play an important role in many environmental hydraulic problems. Owing to their characteristic large spatial and temporal scales, reduced complexity models, such as depth-integrated shallow water (DI-SW) ... -
Comparison of Numerical Models for the Interaction of a Fluid Transient with an Offline Air Pocket
(ASCE, 5/1/2021)Effective modeling of pipe network anomalies can supplement fluid transient diagnostic techniques. This study focuses on comparing modeling approaches for predicting the transient response due to air pockets entrapped ... -
Hybrid Modeling for Design of a Novel Bridge Pier Collar for Reducing Scour
(ASCE, 5/1/2021)Bridge pier scour poses major concerns for public safety and riverine communities because of its ability to undermine pier foundations. A new collar design is introduced as an improvement on the existing Flat Plate Collar ... -
Field Measurements and Numerical Modeling of Hydraulic Transients in HDPE Pipeline with PRV Interaction
(ASCE, 6/1/2021)Pressure reducing valves (PRVs) and high-density polyethylene (HDPE) pipes are commonly used in urban water supply systems (UWSS). To study the joint effect of PRV and viscoelasticity on transient wave propagation, extensive ... -
Optimal Configuration of Rock Vanes and Bendway Weirs for River Bends: Numerical-Model Insights
(ASCE, 5/1/2021)Presented are insights from three-dimensional numerical models used to identify optimal performance configurations of rock vanes and bendway weirs placed in midsize rivers, such as the Middle Reach of the Rio Grande. These ... -
Parameterization and Results of SWE for Gravity Currents Are Sensitive to the Definition of Depth
(ASCE, 5/1/2021)Rigorously derived shallow water equations (SWEs) are applied to results of large eddy simulation (LES) of a continuously fed gravity current in order to assess (1) sensitivity of current depth results to its definition; ... -
Low Froude Number Stilling Basins—Hydrodynamic Characterization
(ASCE, 4/1/2021)Hydraulic jumps, frequently present in energy dissipation structures, have been thoroughly investigated over the past 70 years. However, studies have focused primarily on the more common and more stable cases of large ... -
Wave-Induced Erosion of Soil Embankment in Laboratory Flume
(ASCE, 4/1/2021)Irrigation reservoirs are widely used in parts of the Mississippi River alluvial floodplain to supplement limited groundwater resources. Constructed using local soils that are often low in clay content, the earthen embankments ... -
Roller Characteristics of Preaerated High-Froude-Number Hydraulic Jumps
(ASCE, 4/1/2021)A hydraulic jump in a stilling basin at the base of spillway is typically characterized by preaerated inflow conditions. This paper presents an experimental study of high-Froude-number hydraulic jumps with different ... -
Sediment Transport in Combined Wave–Current Seabed Boundary Layers due to Streaming
(ASCE, 4/1/2021)The sediment transport in the seabed boundary layer due to wave-induced streaming has been investigated for nonzero angle between the current and the waves. The mean sediment transport is a result of interaction between ... -
Flow Redistribution at Bridge Contractions in Compound Channel for Extreme Hydrological Events and Implications for Sediment Scour
(ASCE, 3/1/2021)This study investigates the flood flow characteristics in a compound channel subject to both lateral contraction (caused by bridge abutment/embankment) and vertical contraction (caused by bridge deck submergence) at bridge ... -
Effects of Streamwise Abutment Length on Scour at Riprap Apron-Protected Setback Abutments in Compound Channels
(ASCE, 3/1/2021)Scour at bridge abutments usually consists of local and contraction scour that correlate because of the flow field that develops both scours. Flume experiments were conducted using simulated compound channels to investigate ... -
Trapping Large Wood Debris in Rivers: Experimental Study of Novel Debris Retention System
(ASCE, 3/1/2021)Large wood debris can cause critical damage to bridges and other riverine structures, and increase flood risk. Although their effects on hydrodynamic actions and flood levels have been investigated in recent research, ... -
Dispersion of Oil Droplets in Rivers
(ASCE, 3/1/2021)The dispersion of oil droplets in rivers was numerically investigated for uniform flow in a hypothetical wide river with a depth of 3.0 m. The river hydrodynamics profile was used in conjunction with the VDROP model to ... -
Quantifying the Durability of a Friction-Reducing Surface with Recoverable Superhydrophobicity
(ASCE, 4/1/2021)The durability of superhydrophobic surfaces in fully immersed conditions is a major obstacle to their application in engineering applications. We perform an experimental study to measure the friction factor fd as a function ...