Journal of Hydraulic Engineering: Recent submissions
Now showing items 261-280 of 6886
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Functional Relationships between Critical Erosion Thresholds of Fine Reservoir Sediments and Their Sedimentological Characteristics
(ASCE, 2022/10/01)This study investigated multivariate relationships between critical erosion thresholds of reservoir sediments and their physicochemical and biological characteristics to unravel the effect of sedimentological parameters ... -
Performance of Intrusive Phase-Detection Probe with Large Sensor Size in Air-Water Flow Measurement and Application to Prototype Hydraulic Jump Study
(ASCE, 2022/11/01)A major challenge of prototype air-water flow measurement is the limited endurance of fragile phase-detection needle sensors in a high-momentum flow with risks of debris damage and particulate erosion. In the present study, ... -
Critical Submergence for Horizontal Dual Water Intakes under Perpendicular Uniform Approach Flow
(ASCE, 2022/10/01)The present paper discusses an experimental study on the critical submergence for lateral dual horizontal intakes that are placed in a row and perpendicular to a uniform approach flow. The effect of clear spacing between ... -
Stepped Spillway Prototype Operation and Air Entrainment: Toward a Better Understanding of the Mechanisms Leading to Air Entrainment in Skimming Flows
(ASCE, 2022/11/01)A spillway is a conveyance structure designed to pass flood waters. The construction of steps down the steep chute may contribute to some energy dissipation, in turn reducing the size of the downstream energy dissipator. ... -
Validation of Bagnold’s Approximation of Critical Near-Bed Flow Velocity for Incipient Sediment Motion as Particle Settling Velocity
(ASCE, 2022/10/01)In the derivation of his bedload formula, Bagnold approximated the critical near-bed flow velocity for incipient sediment motion as the particle settling velocity. However, this approximation has not yet been validated ... -
Clear Water Scour at Circular Piers: A New Formula Fitting Laboratory Data with Less Than 25% Deviation
(ASCE, 2022/10/01)In this paper, we propose a new predictor for the time-dependent, spatially-maximum scour depth at a circular pier in clear-water flow conditions. In spite of a number of approaches used in scour research, a simple predictor ... -
Effect of Turbulence Intensity on Riprap Stability over Streambeds
(ASCE, 2022/10/01)The effect of turbulence intensity on riprap stability was studied experimentally. Riprap stones were placed on a flat streambed and turbulence intensity was changed with a turbulence generator. An acoustic Doppler velocimeter ... -
Effect of Wave Skewness and Sediment Particle Size on Sediment Transport Due to Combined Wave–Current Seabed Boundary Layer Streaming
(ASCE, 2022/09/01)The effect of wave skewness and sediment particle size on near-bed sediment dynamics and transport owing to wave-induced streaming is examined in this study. Here, wave-dominated flow over a flat rough bed is studied, with ... -
Hydrodynamic Uplift Forces on Submerged Bridge Decks during Bedform Migration
(ASCE, 2022/09/01)Hydrodynamic forces, especially uplift forces, during a flood event are critical to the stability of bridge superstructures. This study focuses on the interaction between the migrating dunes, the scour depth beneath the ... -
Multilayer Velocity Model Predicting Flow Resistance of Aerated Flows Down Grass-Lined Spillway
(ASCE, 2022/10/01)Grass-lined spillways are flow conveyance structures with environmental benefits. The stability of such spillways has been typically assessed considering soil erosion, but the design of grass-lined spillways based on ... -
Momentum Transfer–Equivalent States Assumption of the Apparent Shear Stress in Compound Open-Channel Flow
(ASCE, 2022/08/01)The use of apparent shear stress at the interface between the adjacent subregions of a cross section to represent the effect of momentum transfer is a common method for the one-dimensional calculation of compound open-channel ... -
A Modified Shock Tracking–Capturing Finite-Volume Approach for Transient Mixed Flows in Stormwater Systems
(ASCE, 2022/11/01)This paper proposes a modification to a previous shock tracking–capturing approach used for simulating transient flows in stormwater systems. Based on the Godunov-type finite-volume (FV) method, this modified approach uses ... -
Hydrodynamic Structure and Turbulent Characteristics of Low-Slope Bedrock Bend Reach with Constant Curvature
(ASCE, 2022/09/01)Recent studies have indicated that low-slope bedrock reaches are more common in nature (the bedrock surface slope is slightly lower than 0.005). This paper focuses on the hydrodynamic structure and turbulent characteristics ... -
Partial Driftwood Rack at Gated Ogee Crest: Trapping Rate and Discharge Efficiency
(ASCE, 2022/08/01)Driftwood belongs to natural rivers just like water and sediment do. A sound ecosystem requires driftwood, although it might jam at civil structures, altering the flow section and rise the backwater. Safety considerations ... -
Hydraulic Modeling of Bridges in Two-Dimensional Shallow Water Models
(ASCE, 2022/08/01)The backwater effect generated by bridges can significantly increase the risk of flooding. In this work we compare two different methods to include the effect of bridges in two-dimensional (2D) shallow water models. The ... -
Experimental Formula for the Hydraulic Erosion Rate and Numerical Applications of Soft Bedrock Channels
(ASCE, 2022/10/01)In this research, laboratory experiments and numerical models were used to develop a new formula for the hydraulic scour rate and a bedrock module for estimating soft bedrock erosion rate, and they were then applied in a ... -
Discharge Distribution in Open-Channel T-Shape Bifurcations: Effect of a Reduced Side Branch Width
(ASCE, 2022/06/29)The primary challenge for river managers in handling open-channel bifurcations is the prediction of the discharge distribution to downstream branches. In this study, we aimed to summarize and complete the available database ... -
Monolithic Multiphysics Simulation of Compound Flooding
(ASCE, 2022/07/08)When heavy rainfall, riverine flooding, and coastal storm surge coincide catastrophic flood conditions can occur, a process referred to as compound flooding. Many studies investigating the effects of compound flooding have ...