Journal of Hydraulic Engineering: Recent submissions
Now showing items 141-160 of 6800
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Analysis of Bedforms in the Mississippi River at Vicksburg, Mississippi, for Select Flows 2011–2016
(American Society of Civil Engineers, 2023/02/01)Quantification of sediment transport rates is necessary for river management but remains difficult due to large volumes of sediment in motion, spatiotemporal heterogeneity in discharge, depth, and morphology, the need for ... -
Experimentation and Modeling of Reach-Scale Vegetative Flow Resistance due to Willow Patches
(American Society of Civil Engineers, 2023/07/01)Reach-scale experiments simulating the physical characteristics of natural woody plants are required for the improved modeling of flow resistance in channels with instream and floodplain vegetation. The first aim of this ... -
Shallow-Flow Velocity Predictions Using Discontinuous Galerkin Solutions
(American Society of Civil Engineers, 2023/05/01)Numerical solvers of the two-dimensional (2D) shallow water equations (2D-SWE) can be an efficient option to predict spatial distribution of velocity fields in quasi-steady flows past or throughout hydraulic engineering ... -
Robust Linear PID Control of a Pressure Reducing Valve
(American Society of Civil Engineers, 2023/02/01)This work presents the design of controls for a pressure-reducing valve considering stability and robustness issues and preserving the classical linear proportional-integral-derivative (PID) structure included in, nowadays, ... -
Self-Aeration and Flow Resistance in High-Velocity Flows Down Spillways with Microrough Inverts
(American Society of Civil Engineers, 2023/06/01)Free-surface aeration is a key characteristic of high-velocity flows on spillways. Despite their common use as conveyance structures, there is a research gap in the understanding of flows across spillways with small invert ... -
Modeling Sediment Resuspension and Transport Processes Induced by Propeller Wash from Ship Traffic
(American Society of Civil Engineers, 2023/05/01)Resuspension and redistribution of sediments induced by propeller wash may significantly influence aquatic ecosystems at contaminated sediment sites. This study describes a numerical modeling method developed to predict ... -
Linking and Comparison of the Damping of Fluid Transients and Frequency Response Diagram Methods for Pipe Leak and Burst Detection and Localization
(American Society of Civil Engineers, 2023/01/01)The purpose of this study was to illustrate the relationship between methods that utilize the damping of fluid transients and approaches based on frequency response diagrams and to discuss the two methods for both leak and ... -
Analytical Modeling of Mean Velocity Profile through Two-Layered Fully Submerged Vegetation
(American Society of Civil Engineers, 2023/02/01)The mean velocity distribution of open channel flows with fully submerged two-layered vegetation can be divided into three zones. Zone 1 represents the lower region of short vegetation, where the flow has high drag because ... -
Velocities and Turbulent Stresses of Free-Surface Skimming Flows over Triangular Cavities
(American Society of Civil Engineers, 2023/06/01)Velocity distributions in supercritical open-channel flows over stepped cavities have traditionally been described using a power-law approach or theoretical solutions of plane mixing layers. These approaches were found to ... -
Flow Characteristics beneath Ice Blocks with Smooth and Rough Undersurfaces
(American Society of Civil Engineers, 2023/04/01)Separating and reattaching flows beneath semisubmerged ice blocks with smooth and rough undersurfaces were systematically studied using a planar particle image velocimetry system. The examined Froude and Reynolds numbers ... -
Forces on a Vertical Dam due to Solitary Impulse Wave Run-Up and Overtopping
(American Society of Civil Engineers, 2023/07/01)Impulse waves feature tsunami-like characteristics and are generated by very rapid mass wasting, including landslides and avalanches, into water bodies. In engineered reservoirs, these waves may run up and overtop the dam, ... -
Calculating Column Separation in Conduit Systems Using an Innovative Open Channel Based Model
(American Society of Civil Engineers, 2023/02/01)An innovative numerical model called the Modified Two-Component Pressure Approach (MTPA) is proposed to better capture the physics of column separation in conduit systems. Based on the Two-Component Pressure Approach (TPA), ... -
Toward a Complete Kinematic Description of Hydraulic Plucking of Fractured Rock
(American Society of Civil Engineers, 2023/07/01)Scour by hydraulic plucking is a fundamental process in landscape evolution in which large, competent rock blocks are eroded from a fractured rock mass by flowing water. This process also affects engineered structures ... -
Improved SWMM Modeling for Rapid Pipe Filling Incorporating Air Behavior in Intermittent Water Supply Systems
(American Society of Civil Engineers, 2023/04/01)Stormwater management model (SWMM) software has recently become a modeling tool for the simulation of intermittent water supply systems. However, SWMM is not capable of accurately simulating the air behavior in the ... -
Reconstructing Extended Irregular Anomalies in Pipelines Using Layer-Peeling with Optimization
(American Society of Civil Engineers, 2023/01/01)Pipe wall condition assessment is critical for targeted maintenance and failure prevention in water distribution systems. This paper proposes a spatially distributed pipeline condition assessment technique using persistent ... -
Uncertainties in Models Predicting Critical Bed Shear Stress of Cohesionless Particles
(American Society of Civil Engineers, 2023/04/01)Our data show large scatter in the critical Shields stress values for initial sediment motion. The main sources of dispersion are related to the methodological procedures defining the inception of movement (i.e., visual ... -
Dynamics of Underwater Gas Blowout in Sonic Regime: Laboratory-Scale Study
(American Society of Civil Engineers, 2023/01/01)To understand the dynamics of vigorous gas jets in underwater gas blowouts, we present a laboratory experiment and data analysis to quantify key physical properties of gas jets horizontally discharged through a single ... -
Small-Scale Modeling of Flexible Barriers. II: Interactions with Large Wood
(American Society of Civil Engineers, 2023/03/01)During strong floods, rivers often carry significant amounts of sediment and pieces of large wood (LW). When bridges and hydraulic structures are unable to allow LW to pass through, it becomes necessary to trap LW through ... -
Small-Scale Modeling of Flexible Barriers. I: Mechanical Similitude of the Structure
(American Society of Civil Engineers, 2023/03/01)Flexible barriers can be used to trap woody debris or debris flows. However, their small scale modelling is challenging because of their possible deformation. This article addresses how to meet the partial mechanical ... -
Bed Shear Stress in Experimental Flash Flood Bores over Dry Beds and over Flowing Water: A Comparison of Methods
(American Society of Civil Engineers, 2023/04/01)Hydraulic parameters, including bed shear stress, are challenging to calculate for flash floods. Applying theoretical equations to strongly unsteady flows requires comprehensive and accurate flow data that are difficult ...