Influence of varying shape and depth on the generation of tidal bores

Shi, Jian; Tong, Chaofeng; Yan, Yuping; Luo, Xingqi

doi:10.1007/s12665-014-3156-2

Cited by 8 publications

(4 citation statements)

References 20 publications

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“…Among the many mechanisms and conditions that affect the process of tidal bore formation, the more relevant are (i) the rate of tidal level rise (e.g., Bonneton et al, 2016;Chanson, 2011b), (ii) the characteristics of the incoming flow, typically flow depth and velocity (e.g., Cai et al, 2014;Filippini et al, 2018), (iii) the funneling shape of the estuary that deforms the tidal wave by steepening the rising limb, hence enhancing the rate of level rise (e.g., Friedrichs & Aubrey, 1994;Lanzoni & Seminara, 1998;Savenije, 2012;Toffolon et al, 2006), (iv) the channel bed profile that also affects the characteristics of the propagating tidal wave (e.g., Cai et al, 2012;Savenije et al, 2008;Shi et al, 2014), and (v) the irregular shape of cross sections, which may introduce additional dissipative processes, alter the wave celerity, and produce reflections and/or distortions of the bore front (e.g., Bonneton et al, 2011;Pan et al, 2007;Shi et al, 2014;Treske, 1994).…”

Section: The Idealized Framework Adopted In the Studymentioning

confidence: 99%

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Consideration of the Mechanisms for Tidal Bore Formation in an Idealized Planform Geometry

Viero

Defina

2018

Water Resources Research

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A tidal bore is a positive wave traveling upstream along the estuary of a river, generated by a relatively rapid rise of the tide, often enhanced by the funneling shape of the estuary. The swell produced by the tide grows and its front steepens as the flooding tide advances inland, promoting the formation of a sharp front wave, that is, the tidal bore. Because of the many mechanisms and conditions involved in the process, it is difficult to formulate an effective criterion to predict the bore formation. In this preliminary analysis, aimed at bringing out the main processes and parameters that control tidal bore formation, the degrees of freedom of the problem are largely reduced by considering a rectangular channel of constant width with uniform flow, forced downstream by rising the water level at a constant rate. The framework used in this study is extremely simple, yet the problem is still complex, and the solution is far from being trivial. From the results of numerical simulations, three distinctive behaviors emerged related to conditions in which a tidal bore forms, a tidal bore does not form, and a weak bore forms; the latter has a weakly steep front and after the bore formed it rapidly vanishes. Based on these behaviors, some criteria to predict the bore formation are proposed and discussed. The more effective criterion, suitably rearranged, is checked against data from real estuaries, and the predictions are found to compare favorably with the available data.

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Section: The Idealized Framework Adopted In the Studymentioning

confidence: 99%

“…The swell produced by the tide grows and its front steepens as the flooding tide advances inland promoting the formation of a sharp front wave, that is, the tidal bore. Freshwater river flow velocity and depth, as well as bed slope and friction, also affect the process (Bartsch-Winkler & Lynch, 1988;Chanson, 2011a;Shi et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Consideration of the Mechanisms for Tidal Bore Formation in an Idealized Planform Geometry

Viero

Defina

2018

Water Resources Research

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“…The bore development is closely linked with the tidal range and the boundary conditions of river mouth. Shi et al [1] investigated how the slope of tidal bores fronts varied with changes in estuariy channel morphology. They found that decreases in channel width and depth promoted the generation of tidal bores.…”

Section: Introductionmentioning

confidence: 99%

Experimental research on the impact pressure of tidal bore fronts

Yue,

Zeng,

Chen

et al. 2024

PLoS ONE

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Tidal bore impact can be strong and destructive, placing estuarine infrastructures under great threat. However, there is a lack of research focusing on accurately estimating the impact pressure exerted by tidal bores. Herein new experiments were conducted to investigate the pressure of tidal bore fronts in a glass flume. Through analysis of instantaneous pressure of three forms of tidal bore, it was observed that the pressure fluctuation of weak and strong breaking bore fronts is characterized by impact pressure. The vertical distribution and maximum impact pressure of tidal bore were studied.The maximum impact pressure of breaking bore fronts appeared around 0.46 times height of it. The relationship between relative impact pressure and height of the tidal bore fronts was found to closely follow a normal probability density function. Through nonlinear regression analysis, an empirical equation was derived to calculate impact pressure, which was validated using observation data from the Qiantang River in China. This equation can be utilized to predict the impact pressure of tidal bore fronts and provide valuable support for estuarine engineering design.

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“…The papers have all undergone a full peer-review process as regular journal submissions and, finally, we are happy to present this special issue consisting of ten papers. This special issue widens the already existing journal focus on shallow water models and their applications, see, for example, Delfs et al (2013), Shi et al (2014), Carbajal et al (2014) or Huang et al (2014.This special issue starts with two contributions dealing with floods. Beisiegel and Behrens (2015) have developed a robust discontinuous Galerkin (DG) model using special basis functions and a slope limiter.…”

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confidence: 98%

Robust shallow water models

et al. 2015

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Shallow water models have been used extensively for decades with various applications in hydroscience and engineering such as flood prediction and management, river restoration and engineering, environmental hydraulics and morphodynamics. In recent years, there has been a special focus on developing robust solvers which are capable of simulating a wide range of complex hydrodynamic problems including dam breaks (shock propagation, wetting and drying, small water depths), as well as flow transitions (subcritical-supercritical flow and vice versa, hydraulic jumps). In addition to classical finite-volume and finite-element schemes, newer methods such as smoothed particle hydrodynamics (SPH) are now being applied and extended. Furthermore, we have seen rapid development in surveying techniques (e.g. airborne and terrestrial laser scanning) which describe the geometry and physical properties of our systems, providing us with increasingly high-resolution information. Substantial improvements have also been made in high-performance computing, with notable advances including Graphic Processing Unit (GPU)-based parallel computing as well as scaling methods, relying, for example, on friction-or porosity-based approaches. Linkage of robust numerical methods, highresolution data, high-performance computing, scaling methods and new information and communication technologies will lead to the next generation of shallow water models opening up new application fields such as rainfallrunoff simulation in urban and rural catchments, real-time flood and tsunami prediction and management, as well as the spreading of impulse water waves generated by landslides.In view of these developments, we have encouraged submissions on both the development of numerical models and interesting applications, for the XX International Conference on Computational Methods in Water Resources held on June 10-13, 2014 in Stuttgart, Germany, especially for the sessions on 'Robust shallow water models', 'Numerical methods for waves, circulation and transport in the coastal Ocean' and 'High-performance computing, visualization and scientific workflow'. This special issue contains papers which have been selected by the guest editors among about 20 contributions. The corresponding authors have been offered the opportunity to contribute to this special issue through a paper about their conference contribution (abstract, oral, or poster presentation). The papers have all undergone a full peer-review process as regular journal submissions and, finally, we are happy to present this special issue consisting of ten papers. This special issue widens the already existing journal focus on shallow water models and their applications, see, for example, Delfs et al. (2013), Shi et al. (2014), Carbajal et al. (2014) or Huang et al. (2014.This special issue starts with two contributions dealing with floods. Beisiegel and Behrens (2015) have developed a robust discontinuous Galerkin (DG) model using special basis functions and a slope limiter. Flooding and drying is simulate...

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Influence of varying shape and depth on the generation of tidal bores

Cited by 8 publications

References 20 publications

Consideration of the Mechanisms for Tidal Bore Formation in an Idealized Planform Geometry

Consideration of the Mechanisms for Tidal Bore Formation in an Idealized Planform Geometry

Experimental research on the impact pressure of tidal bore fronts

Robust shallow water models

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