Numerical modeling of two dimensional non-capacity model for sediment transport by an unstructured finite volume method with a new discretization of the source term

Jelti, S.; Boulerhcha, Mohammed

doi:10.1016/j.matcom.2022.02.012

Cited by 12 publications

(1 citation statement)

References 36 publications

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“…Despite their potential superiority, use of 3D models in modelling morphodynamics in prototype rivers compared with 2D ones has been questioned (Duan & Julien, 2010; Kasvi et al, 2015; Rüther & Olsen, 2007). In fact, 2D models are preferred for representing coupled flow‐bedload transport dynamics in large‐scale prototype rivers (Jelti & Boulerhcha, 2022; Li & Duffy, 2011; Luo et al, 2018) and have been successfully used for characterizing the dynamics of major rivers, including the Nile River (Nassar, 2011), the Amazon River (Wilson et al, 2007), the Yangtze River (Liu et al, 2020) and the Yellow River (Hu et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Numerical assessment of hydro‐morphodynamics affected by altered upstream discharge in the Dujiangyan reach of the Min River, China

Wang,

Cheng,

Luo

et al. 2024

Hydrological Processes

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The Dujiangyan Irrigation Project, a globally well‐known hydraulic engineering project, is significant for the Chengdu Plain. In recent years, due to water supply scarcity in the Chengdu Plain and increasing flood disasters in the Min River, the Moertan Reservoir was constructed to alleviate these pressures. The construction resulted in a mid‐reach embankment along the Min River that forced channel narrowing and triggered changes in channel morphology, flow and bedload transport. This study utilised field measurements coupled with physical and numerical models to simulate the resulting characteristics of flow, bedload transport and topographic change for different flood frequencies in the Dujiangyan reach following emplacement of the Moertan Reservoir. The results indicated that following extensive hydraulic regulation, the flow‐bedload transport characteristics and morphodynamics exhibited similar behaviours across different flood frequencies. The presence of a mid‐channel gravel‐cobble shoal (GCS) divided the flow into multiple branches, with the right branch systematically dominating flow and bedload transport across all flood frequencies. Further downstream, the Fish Mouth Levee effectively diverted nearly equal amounts of flow through the Inner and Outer rivers. In contrast, approximately 20% and 80% of the bedload was transported through the Inner and Outer rivers, respectively. The findings were beneficial in providing a reference for the flood season management of the Dujiangyan Irrigation Project and the maintenance of associated hydraulic engineering projects.

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