Journal of Hydraulic Engineering: Recent submissions
Now showing items 61-80 of 6800
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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 ... -
Clear-Water Scour Mechanism at Vibrating Monopile Foundations
(ASCE, 2024/07/01)Cyclic lateral loads on monopile foundations of offshore wind turbines induce vibrations that affect the clear-water scour process around the foundations. Previous experimental studies showed that the current-induced ... -
Evolution and Characterization of Pressurized Flow Conditions in Stormwater Collection Networks
(ASCE, 2024/03/01)Intense rain events and sprawling urbanization have contributed to more frequent flash flooding in cities, often due to the pressurization of drainage systems. Stormwater collection networks (SCNs) can become pressurized ... -
Control of Surface Plastic Transport in Natural Streams
(ASCE, 2024/07/01)In the aftermath of the worldwide severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, the disposal of plastic and nonwoven fabric materials originating from personal protective equipment (PPE) into ... -
A Novel and Enhanced Calibration of the Tilting Weir as a Flow Measurement Structure
(ASCE, 2024/03/01)A large collection of laboratory measurements of piezometric head (h) and discharge (Q) were made over hydraulic models of a tilting weir at nine different angles, ranging from 25.7° to 90° within a 0.3-m-wide flume. These ... -
Nikuradse Roughness Height Derived from a Physically Based Model Applied to a River Channel with Dunes
(ASCE, 2024/07/01)The Nikuradse roughness height for a river channel or, equivalently, the friction factor (f) or Manning’s coefficient, are parameters required to calibrate hydrodynamic models used for flood risk management. In general, ... -
Laplace-Domain Fluid–Structure Interaction Solutions for Water Hammer Waves in a Pipe
(ASCE, 2024/03/01)Numerical methods generally need analytical solutions as test cases and validations in simplified problems. This work provides Laplace-domain explicit analytic solutions for fluid–structure interaction (FSI) water hammer ...