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Wave transformation and hydrodynamic characteristics of wave-breaking models coupled with Boussinesq equations
This paper investigates the different wave transformation and hydrodynamic characteristics of three different wave-breaking models – friction-type, eddy viscosity-type and surface roller-type models – coupled with the weakly nonlinear Boussinesq equations with improved linear dispersion characteristics based on comparisons between predicted and measured wave-breaking phenomena. The experimental cases consider not only different breaker types but also different bathymetry conditions, i.e. uniform slopes and a uniform slope with a submerged breakwater. Although all of the properly calibrated wave-breaking models yield equally good predictions of wave heights, mean water levels and trough levels of breaking and broken waves, the models show clear differences in their predictions of the undertow velocity, near-bottom wave orbital velocity profile, wave skewness, and wave asymmetry. The importance of such differences in the predictive capabilities of these widely used wave-breaking models should be highlighted, particularly when extending the model to the prediction of coastal morphodynamics around the surf zone.
Wave transformation and hydrodynamic characteristics of wave-breaking models coupled with Boussinesq equations
This paper investigates the different wave transformation and hydrodynamic characteristics of three different wave-breaking models – friction-type, eddy viscosity-type and surface roller-type models – coupled with the weakly nonlinear Boussinesq equations with improved linear dispersion characteristics based on comparisons between predicted and measured wave-breaking phenomena. The experimental cases consider not only different breaker types but also different bathymetry conditions, i.e. uniform slopes and a uniform slope with a submerged breakwater. Although all of the properly calibrated wave-breaking models yield equally good predictions of wave heights, mean water levels and trough levels of breaking and broken waves, the models show clear differences in their predictions of the undertow velocity, near-bottom wave orbital velocity profile, wave skewness, and wave asymmetry. The importance of such differences in the predictive capabilities of these widely used wave-breaking models should be highlighted, particularly when extending the model to the prediction of coastal morphodynamics around the surf zone.
Wave transformation and hydrodynamic characteristics of wave-breaking models coupled with Boussinesq equations
Siddique, Mohsin (Autor:in) / Merabtene, Tarek (Autor:in) / Tajima, Yoshimitsu (Autor:in)
Journal of Hydraulic Research ; 55 ; 759-771
02.11.2017
13 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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