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 : Three-dimensional numerical simulation of the hydrodynamics generated by a weak breaking tidal bore
Three-dimensional numerical simulation of the hydrodynamics generated by a weak breaking tidal bore
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A tidal bore is a positive surge propagating upstream as the tidal flow turns to rising in river mouths exhibiting a converging funnelled channel forms during low freshwater conditions. While some recent laboratory experiments brought new insights to the turbulent motion generated by tidal bores, a numerical model based upon the Navier-Stokes equations is proposed to investigate the complicated features of the flow. The goal of the present work is to simulate this three-dimensional unsteady twophase tidal bore motion. Therefore, we use a Synthetic Eddy Method to generate the turbulence and a Large Eddy Simulation method to gain a further understanding of the tidal bore processes. The numerical data are compared with some detailed laboratory data and the results are discussed. We aim at describing accurately the free-surface behaviour and the turbulent flow structure. This work is the first attempt to describe this complicated flow with three-dimensional numerical simulation.
File Size : 592,357 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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