Modeling sediment transport in the swash zone: A review

Bakhtyar, R., Barry, D. A., Li, L., Jeng, D. S. and Yeganeh-Bakhtiary, A. (2009) Modeling sediment transport in the swash zone: A review. Ocean Engineering, 36 9-10: 767-783. doi:10.1016/j.oceaneng.2009.03.003


Author Bakhtyar, R.
Barry, D. A.
Li, L.
Jeng, D. S.
Yeganeh-Bakhtiary, A.
Title Modeling sediment transport in the swash zone: A review
Journal name Ocean Engineering   Check publisher's open access policy
ISSN 0029-8018
1873-5258
Publication date 2009-07
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1016/j.oceaneng.2009.03.003
Volume 36
Issue 9-10
Start page 767
End page 783
Total pages 17
Editor Atilla Incecik
Place of publication New York, NY, U.S.A.
Publisher Pergamon Press
Language eng
Subject 0905 Civil Engineering
Formatted abstract
A critical review of conceptual and mathematical models developed in recent decades on sediment transport in the swash zone is presented. Numerous studies of the hydrodynamics and sediment transport in the swash zone in recent years have pointed out the importance of swash processes in terms of science advancement and practical applications. Evidently, the hydrodynamics of the swash zone are complex and not fully understood. Key hydrodynamic processes include both high-frequency bores and low-frequency infragravity motions, and are affected by wave breaking and turbulence, shear stresses and bottom friction. The prediction of sediment transport that results from these complex and interacting processes is a challenging task. Besides, sediment transport in this oscillatory environment is affected by high-order processes such as the beach groundwater flow. Most relationships between sediment transport and flow characteristics are empirical, based on laboratory experiments and/or field measurements. Analytical solutions incorporating key factors such as sediment characteristics and concentration, waves and coastal aquifer interactions are unavailable. Therefore, numerical models for wave and sediment transport are widely used by coastal engineers. This review covers mechanisms of sediment transport, important forcing factors, governing equations of wave-induced flow, groundwater interactions, empirical and numerical relations of cross-shore and longshore sediment transport in the swash zone. Major advantages and shortcomings of various numerical models and approaches are highlighted and reviewed. These will provide coastal modelers an impetus for further detailed investigations of fluid and sediment transport in the swash zone.
© 2009 Elsevier Ltd. All rights reserved.
Keyword Beach groundwater
Cross-shore
Longshore
Hydrodynamics
Numerical modeling
Up-rush (run-up)
Backwash (run-down)
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collection: School of Civil Engineering Publications
 
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