Efficient numerical computation and experimental study of temporally long equilibrium scour development around abutment

Pu, Jaan H.; Lim, Siow‐Yong

doi:10.1007/s10652-013-9286-3

Cited by 33 publications

(10 citation statements)

References 32 publications

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“…It was observed that d se around the pier always occurred at the upstream pier nose and the scour hole geometry was similar at the left and right sides of the pier. Similar findings have also been found by many researchers [2,[27][28][29].…”

Section: Present Experimental Worksupporting

confidence: 92%

Pier Scour Prediction in Non-Uniform Gravel Beds

Pandey

Oliveto

et al. 2020

Water

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Pier scour has been extensively studied in laboratory experiments. However, scour depth relationships based on data at the laboratory scale often yield unacceptable results when extended to field conditions. In this study, non-uniform gravel bed laboratory and field datasets with gravel of median size ranging from 2.7 to 14.25 mm were considered to predict the maximum equilibrium scour depth at cylindrical piers. Specifically, a total of 217 datasets were collected: 132 from literature sources and 85 in this study using new experiments at the laboratory scale, which constitute a novel contribution provided by this paper. From the analysis of data, it was observed that Melville and Coleman’s equation performs well in the case of laboratory datasets, while it tends to overestimate field measurements. Guo’s and Kim et al.’s relationships showed good agreements only for laboratory datasets with finer non-uniform sediments: deviations in predicting the maximum scour depth with non-uniform gravel beds were found to be significantly greater than those for non-uniform sand and fine gravel beds. Consequently, new K-factors for the Melville and Coleman’s equation were proposed in this study for non-uniform gravel-bed streams using a curve-fitting method. The results revealed good agreements between observations and predictions, where this might be an attractive advancement in overcoming scale effects. Moreover, a sensitivity analysis was performed to identify the most sensitive K-factors.

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Section: Present Experimental Worksupporting

confidence: 92%

Pier Scour Prediction in Non-Uniform Gravel Beds

Pandey

Oliveto

et al. 2020

Water

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“…The analytical calculation of the turbulent dam break wave gives efficient solutions with the presences of bed friction as compared to numerical model, i.e. as presented in Pu et al 6,14 . This study also adopts the conceptual model of Whitham 12 in which the ideal fluid flow is used behind the frictionally dominated wave front region.…”

Section: Turbulent Results and Discussionmentioning

confidence: 99%

Untitled

2018

FMRIJ

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A dam break wave caused by the discontinuity in depth and velocity of a flow is resulted from instantaneous release a body of water from a channel and classified naturally as a rapidly varied unsteady flow. Due to its nature, it is hard to be accurately represented by analytical models. The aim of this study is to establish the modelling differences and complexity echelons between analytically simulated explicit laminar and turbulent dry bed dam break wave free surface profiles. An in-depth solution to the free surface profile has been provided and evaluated by representing the reported dam break flow measurements at various locations. The methodology adopted utilizes the free surface profile formulations presented by Chanson 1,2 , which are developed using the method of characteristics. In order to validate the results of the presented analytical models in illustrating the dam break wave under dry bed conditions, published experimental data provided by Schoklitsch 3 , Debiane 4 and Dressler 5 are used to compare and analyze the performance of the dam break waves under laminar and turbulent flow conditions.

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“…for flood flow. In terms of modelling sedimentation within flood inundation, various studies have proposed time-effective models to represent the transport phenomenon accompanied in turbulence flow and flooding [1,4,10] and further study at Pu and Lim [5] suggested an effective sediment transport modelling system to simulate turbulent flow sedimentation, e.g. in concentrated sediment flashing and in fast scouring flow, suitable to be deployed in flashflood modelling.…”

Section: Modelling Methodology Of Nfmmentioning

confidence: 99%

CNumerical Modelling of Natural Flood Management and its Associated Microbial Risks in the United Kingdom

2018

BJSTR

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This paper reviews and discusses the recent studies of natural flood management (NFM) and its associated microbial risks in the UK and suggests set of numerical modelling approaches for their respective investigation. This study details the importance of precise numerical representation of the NFM to flood inundations and microbial risks caused by NFM measures. Possible future numerical advancements of the numerical modelling for the NFM and microbial activities are also discussed here.

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Efficient numerical computation and experimental study of temporally long equilibrium scour development around abutment

Cited by 33 publications

References 32 publications

Pier Scour Prediction in Non-Uniform Gravel Beds

Pier Scour Prediction in Non-Uniform Gravel Beds

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CNumerical Modelling of Natural Flood Management and its Associated Microbial Risks in the United Kingdom

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