Results 11 to 20 of about 250 (214)
A bed-load formula based on kinetic theory
Shui kexue jinzhan, 2013 Bed-load plays an important role in sediment transport in fluvial rivers. This paper presents a bed-load formula on the basis of kinetic theory. The pick-up rate of bed-load sediment in the formula is obtained by integrating the velocity distribution ...
ZHANG Lei +3 more
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Bed-load transport rate based on the entrainment probabilities of sediment grains by rolling and lifting [PDF]
International Journal of Sediment Research, 2018 38 pages, 4 ...
Li, Jun-de, Sun, J, Lin, B
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Movement characteristics and transport laws of the bimodal bed load
Shui kexue jinzhan, 2015 The non-uniform bed load transport is a complicated coherent physical process of the fluid and solid in river. The research into the motion characteristics,transport laws as well as the action mechanism of influencing factors can help to not only ...
SUN Dongpo +5 more
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Sediment shell-content diminishes current-driven sand ripple development and migration [PDF]
Earth Surface Dynamics, 2021 Shells and shell fragments are biogenic structures that are widespread throughout natural sandy shelf seas and whose presence can affect the bed roughness and erodibility of the seabed.
C. H. Cheng +7 more
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Flow Resistance and Bed Load Transport Rate for Sand Waves
PROCEEDINGS OF HYDRAULIC ENGINEERING, 1992 Bed shear stress distribution along the bed surface is derived from boundary layer equation. Then, an effective shear stress for sand waves is expressed as integration of the bed shear stress distribution. As the bed load motion is influenced by fluctuation of flow intensity, the estimation methods of pick-up rate and average step length are proposed ...
MIWA, Hiroshi, DAIDO, Atsuyuki
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Journal of Marine Science and Engineering, 2023 This study focuses on the numerical investigation of the 3D hydrodynamic processes of coastal zones such as wave breaking, wave-induced currents, and sediment transport, using the multiphase, interFoam solver of OpenFOAM® (a state-of-the-art, open-source
Ioannis Kazakis, Theophanis V. Karambas
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Advection and dispersion of bed load tracers [PDF]
Earth Surface Dynamics, 2018 We use the erosion–deposition model introduced by Charru et al. (2004) to numerically simulate the evolution of a plume of bed load tracers entrained by a steady flow. In this model, the propagation of the plume results from the stochastic exchange of
E. Lajeunesse, O. Devauchelle, F. James
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Performance of Bed-Load Transport Equations Relative to Geomorphic Significance: Predicting Effective Discharge and Its Transport Rate [PDF]
Journal of Hydraulic Engineering, 2008 Previous studies assessing the accuracy of bed-load transport equations have considered equation performance statistically based on paired observations of measured and predicted bed-load transport rates. However, transport measurements were typically taken during low flows, biasing the assessment of equation performance toward low discharges, and ...
Jeffrey J. Barry +4 more
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Dynamic Characteristics of Suspended Load and Bed Load Transport in Meltwater Runoff of Qiyi Glacier
Shuitu Baochi Xuebao[Objective] The transportation of sediment via glacial meltwater can not only reflect the glacial erosion and landform evolution, but also is one of the important sediment sources for the downstream river.
ZHAO Yi +5 more
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A probabilistic description of the bed load sediment flux: 4. Fickian diffusion at low transport rates [PDF]
Journal of Geophysical Research: Earth Surface, 2012 High‐speed imaging of coarse sand particles transported as bed load reveals how particle motions possess intrinsic periodicities associated with their start‐and‐stop behavior. The dominant harmonics in these motions have a primary influence on the rate at which the mean squared particle displacementR(τ) — a measure conventionally used to assess the ...
David Jon Furbish +2 more
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