IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 34th Congress - Brisbane (2011) : THEME 2: Coastal Hydraulics: Form and Function : Numerical model of wave-driven coastal current considering depth-dependent radiation stresses
Numerical model of wave-driven coastal current considering depth-dependent radiation stresses
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The spiral profile of wave-driven coastal current plays very important role in the balance of onshore-offshore sediment transport and then the evolution of coastline. However, the knowledge and the modelling of the complicated three-dimensional coastal currents are still limited. In the present study, a quasi three dimensional numerical model of wave-driven currents is developed by taking a time average over a wave period on the basis of Navier-Stokes equations. It establishes the terms of the wave induced radiation stresses varying over depth in the momentum equations. The depthdependent radiation stresses are calculated using water particle and wave pressure from the secondorder Stokes wave theory. The model capacity is examined by comparing the computational results with the laboratory measurements of vertical circulations. The modelled currents show a good agreement with experiments.
File Size : 198,843 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 2: Coastal Hydraulics: Form and Function
Date Published : 01/07/2011
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