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Simple Formulation of Bedload Sediment Transport Rate Based on Novel Definition of Pickup Probability
Publisher: ASCE
Abstract: The pickup probability of bedload sediment can be defined as the channel width fraction that is only associated with entrained particles. With this definition, the dimensionless bedload transport rate can be formulated as ...
Flow Patterns and Turbulent Kinetic Energy Budget of Undular Jumps in a Narrow Flume
Publisher: ASCE
Abstract: This paper presents results obtained from a detailed analysis of the experimental data of three hydraulic jumps with low Froude numbers (1.5–1.9) in a narrow flume. With the increasing Froude number, the three generated ...
Critical Flow Velocity for Incipient Sediment Motion in Open Channel Flow with Rigid Emergent Vegetation
Publisher: ASCE
Abstract: In vegetated open channel flow, sediment transport is affected by both boundary shear and vegetation-induced turbulence. This study presents a theoretical derivation of the critical flow condition for incipient sediment ...
Validation of Bagnold’s Approximation of Critical Near-Bed Flow Velocity for Incipient Sediment Motion as Particle Settling Velocity
Publisher: ASCE
Abstract: 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 ...
Particle Image Velocimetry Measurements of Bed-Shear Stress Induced By Wall-Bounded Swirling Jets
Publisher: ASCE
Abstract: This study presents measurements of the bed shear stress associated with the three-dimensional boundary layer induced by a wall-bounded swirling jet. The velocity profile within the viscous sublayer was measured in detail ...
Local Scour and Flow Characteristics around Pipeline Subjected to Vortex-Induced Vibrations
Publisher: ASCE
Abstract: Although local scour around submarine pipelines has been extensively studied in the last few decades, understanding of the mechanism of local scour around pipelines is still in its infancy stage due to the complex nature ...
Application of Particle Densimetric Froude Number for Evaluating the Maximum Culvert Scour Depth
Publisher: ASCE
Abstract: This paper presents a compilation of a large database consisting of 588 culvert scour experiments covering a wide combination of different culvert shapes, culvert outlet conditions, and sediment properties. The analysis ...
Evaluation of Sediment Gradation Effects on Clear-Water Pier Scour with Densimetric Froude Number
Publisher: ASCE
Abstract: This study evaluates sediment gradation effects on clear-water scour at bridge piers. By considering the average erosion and deposition rates in a pier-scour hole, the normalized equilibrium scour depth is theoretically ...
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