Effects of initial and boundary conditions on gravel-bed river morphology

Paudel, Sandesh; Singh, Udita; Crosato, Alessandra; Franca, Mário J.

doi:10.1016/j.advwatres.2022.104256

Cited by 2 publications

(1 citation statement)

References 86 publications

(130 reference statements)

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“…Bed Morphology of braided rivers is influenced by flow and sediment transport rate. If the sediment from the upstream supplies an appropriate amount of sediment, the width/depth ratio of the river will become greater, this process will progress the river into a braided river easier [22][23][24]. Peter Ashmore [25] concise the braiding processes by conducting flume experiments that focused on the bed profile deviations of the braided river under different flow rates.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Depth-Averaged Velocity and Bed Profile in a Braided Channel with a Mid-Bar

Muhammad Fahmi Arifin,

Zulhilmi Ismail,

Mazlin Jumain

et al. 2023

ARASET

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Braided alluvial rivers with a mid-bar are common features occurred in alluvial river that consists of bifurcation and confluence channels. The formation of the mid-bar will affect the hydraulics of river systems in terms of velocity and bed morphology. The studies corresponding to the typical braided river with a mid-bar are still ongoing. This paper is to present the finding of depth-averaged velocity, Ud and bed profile at the bifurcation and confluence channel. A channel with a mid-bar and erodible bed was used in this research. The experimental work was carried out in the Hydraulic Laboratory at Universiti Teknologi Malaysia, (UTM). In the experiment, two types of flow which are low flow and high flow rates were considered. The study found that depth-averaged velocity distributions are influenced by flow discharge and varied at the braided channel. The highest Ud velocity is 0.35 m/s occurred at the bifurcation area and the lowest Ud is 0.2 m/s that was occurred at the confluence area. This genesis to more erosion occurred at the bifurcation area compared to the confluence area.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Depth-Averaged Velocity and Bed Profile in a Braided Channel with a Mid-Bar

Muhammad Fahmi Arifin,

Zulhilmi Ismail,

Mazlin Jumain

et al. 2023

ARASET

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A Review of Numerical Modelling of Morphodynamics in Braided Rivers: Mechanisms, Insights and Challenges

Yang

Zhou

et al. 2023

Water

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In the past decade, the numerical modelling of braided river morphodynamics has experienced a significant advance due to the increasing computer power and the development of numerical techniques. Numerical models are quite efficient in exploring scenarios with different settings, and they can be applied to investigate the complicated physics laws of natural braided rivers and manage complex river engineering problems. However, braided river models are far from fully developed, e.g., the representation of flow and sediment transport, model sensitivity, essential effects of sediment transport, bank erosion and vegetation, and require intensive refinement and validation to enhance their prediction accuracy. The recent application of advanced field measurement techniques offers model development a new chance by providing abundant measurement data of a high quality. The present study reviews the essential mechanisms and applications of typical braided river models; compares their accuracy; discusses the recent progress, advantages and shortcomings; and illustrates the challenges and future research trends.

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Effects of initial and boundary conditions on gravel-bed river morphology

Cited by 2 publications

References 86 publications

Experimental Study on Depth-Averaged Velocity and Bed Profile in a Braided Channel with a Mid-Bar

Experimental Study on Depth-Averaged Velocity and Bed Profile in a Braided Channel with a Mid-Bar

A Review of Numerical Modelling of Morphodynamics in Braided Rivers: Mechanisms, Insights and Challenges

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