The influence of coarse particle abundance and spatial distribution on sediment transport and cluster evolution in steep channels under sediment-starved conditions

Li, Wenqi; Saletti, Matteo; Hassan, Marwan A.; Johnson, J. P.; Carr, J. C.; Chui, Chee-Kong; Yang, Kejun

doi:10.1016/j.catena.2023.107199

Cited by 5 publications

(1 citation statement)

References 89 publications

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“…However, accurately predicting the forces that stabilize sediments in a river is challenging without reliable estimates of flow velocity and depth (Yager et al 2007). However, previous studies on this aspect have relied on flows characterized by small-scale roughness, where the sediment size is relatively small in comparison to the depth of flow (Coscarella et al 2020;Li et al 2023…”

Section: Flow Resistancementioning

confidence: 99%

A Comprehensive Review on Sediment Transport, Flow Dynamics, and Hazards in Steep Channels

Mir,

Patel

2024

JWMM

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The hydrological channel networks of the steep mountains are extensively designated and organized geographic systems and are very complicated. They are composed of granular beds that are uneven and are subjected to fluid forces that fluctuate spatially and temporally. The flow and movement of sediment in these streams are significantly shaped by large rocks such as boulders. However, it is difficult to comprehend these mountain streams because significant information is unavailable regarding these channels as compared to plane bed streams. To address this issue, a critical review of the numerical, computational fluid dynamics, and machine learning mechanisms underlying sediment transport across different flow conditions in steep channels is presented while considering the current and foreseeable conditions for various sediment transport phenomena. The present study emphasized to carry out further analysis on these steep channels using advanced available techniques to get an insight into the morphology of these channels. Furthermore, the hazards associated with steep mountain channels are reviewed as they have a significant impact on infrastructure and habitation in mountainous regions.

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Section: Flow Resistancementioning

confidence: 99%

A Comprehensive Review on Sediment Transport, Flow Dynamics, and Hazards in Steep Channels

Mir,

Patel

2024

JWMM

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Experiments on kinematic characteristics and energy dissipation in rockfall movement on a slope

Peng,

Chen,

Hassan

et al. 2024

Physics of Fluids

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This paper presents an experimental methodology for tracking trajectories of rockfall-saltation and extracting kinematic parameters from collisions between rockfalls and a slope surface. We conducted a series of experiments, each featuring different initial impact angles. Rockfall trajectories and their three-dimensional angular velocities were measured by a high-speed camera and built-in Inertial Measurement Unit (IMU), respectively. Our experiments demonstrate that rockfall dissipates its total energy as it progresses along the slope, and the dissipation rates are largely determined by the initial impact angle. Following the classification of rockfall-bed collisions into two modes—Mode-1: saltation dominant and Mode-2: rolling and sliding dominant, we examined the correlations between impact angles and the probability density functions of kinetic, linear, and rotational kinetic energy, as well as the coefficients of kinetic friction and restitution in both modes. Our findings highlight the crucial role of three-dimensional angular velocities in rockfall kinematics, displaying a notable divergence of up to 60% when compared with their two-dimensional counterparts. This is particularly evident in Mode-2, where the increase in rotational energy following collisions exceeds that of Mode-1 × 25%. The experimental investigation contributes to a deeper understanding of the fundamental physical processes inherent in successive rockfall-slope collisions, thereby benefitting predictive capabilities for rockfall disasters in mountainous regions.

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A critical review on the tsunami-induced scour around structures

Jazaeri,

Nistor,

Mohammadian

et al. 2024

Coastal Engineering Journal

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The influence of coarse particle abundance and spatial distribution on sediment transport and cluster evolution in steep channels under sediment-starved conditions

Cited by 5 publications

References 89 publications

A Comprehensive Review on Sediment Transport, Flow Dynamics, and Hazards in Steep Channels

A Comprehensive Review on Sediment Transport, Flow Dynamics, and Hazards in Steep Channels

Experiments on kinematic characteristics and energy dissipation in rockfall movement on a slope

A critical review on the tsunami-induced scour around structures

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