Numerical modeling of scour and deposition around permeable cylindrical structures

Pan, Jiajia; He, Zhiguo; Shih, WuRong; Cheng, Nian‐Sheng

doi:10.1016/j.ijsrc.2020.01.001

Cited by 8 publications

(4 citation statements)

References 32 publications

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“…Pan and Huang [112] used a 2D depth-averaged wave model to simulate tsunami-induced scour of a vertical cylinder and received a good agreement between the numerical results and experimental data. Pan, He [113] and Pu and Lim [114] solved 2D shallow-water equations to simulate current-induced scour of a porous vertical cylinder. Pan, He [113] demonstrated that the depth-averaged 2D model cannot predict scour caused by a horseshoe vortex but can predict the effect of the permeability on the scour well.…”

Section: Two-dimensional Depth-averaged Modelsmentioning

confidence: 99%

“…Pan, He [113] and Pu and Lim [114] solved 2D shallow-water equations to simulate current-induced scour of a porous vertical cylinder. Pan, He [113] demonstrated that the depth-averaged 2D model cannot predict scour caused by a horseshoe vortex but can predict the effect of the permeability on the scour well. In the numerical simulation of scour around vertical piles using 2D shallow-water equations by Mohamed Rajab and Thiruvenkatasamy [62], it is apparent that the scour due to a horseshoe vortex in front of the piles was not accurately predicted.…”

Section: Two-dimensional Depth-averaged Modelsmentioning

confidence: 99%

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A Review on Recent Development of Numerical Modelling of Local Scour around Hydraulic and Marine Structures

Zhao

2022

JMSE

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This paper reviews the recent development of numerical modelling of local scour around hydraulic and marine structures. The numerical models for simulating local scour are classified into five categories: sediment transport rate models, two-phase models, CFD-DEM models, equilibrium scour models and depth-averaged models. The sediment transport rate models are the most popularly used models because of their high calculation speed and availability of empirical formulae for predicting sediment transport rates. Two-phase models were developed to simulate sediment transport in the format of sheet flow under strong current velocity or strong turbulence. The CFD-DEM model simulates the motion of every individual sediment particle. Its speed is the slowest, but it provides the opportunity to understand fundamental mechanisms of flow–particle interaction and particle–particle interaction using small-scale simulations. Equilibrium scour models predict the final scour profile at the equilibrium stage but cannot predict scour history. The depth-averaged models that were developed early are not recommended for local scour problems because they are not able to predict three-dimensional features around structures. Although many numerical models have been developed and many studies have been conducted to investigate local scour, some challenging problems remain to be solved, for example, the effects from scaling and sediment gradation. In addition, people’s understanding of local scour of cohesive sand is still very shallow, and more experimental and numerical research in this area is needed.

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Section: Two-dimensional Depth-averaged Modelsmentioning

confidence: 99%

Section: Two-dimensional Depth-averaged Modelsmentioning

confidence: 99%

A Review on Recent Development of Numerical Modelling of Local Scour around Hydraulic and Marine Structures

Zhao

2022

JMSE

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“…Liu et al, 2011Z. Liu et al, , 2012Pan et al, 2020;Stoesser et al, 2010). Methods for solving the velocity distribution primarily include numerical solution models and analytical solution models (Finnigan & Belcher, 2004;Huai et al, 2009Huai et al, , 2019Z.…”

Section: Introductionmentioning

confidence: 99%

“…In rivers and lakes, vegetation characteristics and layout, river and lake bottom form, degree of bending of the river course, sediments, and suspended solids all have an effect on the characteristics of water flow (Jiang et al., 2022; C. Liu, Shan, et al., 2020; S. Li & Katul, 2020; Li et al., 2023; C. Liu et al., 2021; Shan et al., 2020; Sun et al., 2022; Yang et al., 2023; Zhan et al., 2024; Zhang et al., 2020, 2024). Among them, the velocity distribution is the focus of research of rivers and the basis of aquatic environments, water ecology, and water–sediment movement (Cheng, 2015; G. Katul et al., 2002; S. Li et al., 2019; Z. Liu et al., 2011, 2012; Pan et al., 2020; Stoesser et al., 2010). Methods for solving the velocity distribution primarily include numerical solution models and analytical solution models (Finnigan & Belcher, 2004; Huai et al., 2009, 2019; Z. Liu et al., 2012; Stoesser et al., 2006, 2009; C. Liu & Shan, 2022; Shan et al., 2023).…”

Section: Introductionmentioning

confidence: 99%

New Drag Force Formula of Bending Stems in Deriving Analytical Solutions of Velocity Profile for Flow Through Flexible Vegetation

Li,

Wang,

Dong

et al. 2024

Water Resources Research

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Investigations of water flow movements affected by vegetation is a research hotspot in vegetation ecological restoration. The theory and equations of the flow velocity distribution under the influence of rigid vegetation are relatively mature. This study proposes a new drag force equation that varies with the vegetation bending angle and a new analytical solution of the velocity profile. Comparisons between the model calculation and experimental data, results showed that this new proposed model produced accurate simulations for flow through flexible vegetation for various deflections. In addition, this analytical model was verified to be applicable to rigid vegetation without a bending angle. Moreover, the features of the parameters adopted in this analytical equation are discussed, and the empirical equation for these parameters are presented. This study further improves the research in the field of environmental fluid mechanics and can serve as a theoretical underpinning for the ecological restoration of river courses.

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Investigation of the reduction of sediment deposition and river flow resistance around dimpled surface piers

Zhang

Wang²,

Zhou³

et al. 2023

Environ Sci Pollut Res

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Numerical modeling of scour and deposition around permeable cylindrical structures

Cited by 8 publications

References 32 publications

A Review on Recent Development of Numerical Modelling of Local Scour around Hydraulic and Marine Structures

A Review on Recent Development of Numerical Modelling of Local Scour around Hydraulic and Marine Structures

New Drag Force Formula of Bending Stems in Deriving Analytical Solutions of Velocity Profile for Flow Through Flexible Vegetation

Investigation of the reduction of sediment deposition and river flow resistance around dimpled surface piers

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