Chapter
Dec 31, 2015

Breaking Waves Propagating Over a Shoal

Publication: Coastal Engineering 1992

Abstract

Spectral evolution of breaking and nearly breaking waves propagating over a submerged trapezoidal bar has been investigated in laboratory experiments. It is found that wave breaking itself does not play a crucial role in the evolution of the spectral shape, but contributes simply by extracting energy roughly in proportion to the local spectral density. For nonbreaking waves, a Boussinesq model with improved dispersion characteristics is found to simulate the wave evolution very well. On the basis of these findings, it is suggested to combine a semi-empirical model for the overall energy dissipation with a nondissipative Boussinesq model so as to obtain a model for simulation of spectral evolution of breaking waves.

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Go to Coastal Engineering 1992
Coastal Engineering 1992
Pages: 41 - 50

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Published online: Dec 31, 2015

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J. A. Battjes
Professor, Dept. of Civil Eng., Delft University of Technology, P.O. Box 5048, 2600 GA, Delft, The Netherlands.
S. Beji
Former post-doctorate fellow at Delft University of Technology. Present employment: Naval Architecture and ocean Engineering Faculty, Istanbul Technical University, Turkey.

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