Effect Of Wave Breaking In Vertical Diffusion Coefficient
Author(s)
H. Kim, C. Jang
Abstract
Effect of wave breaking on vertical
diffusion coefficient
H. Kim, C. Jang
Department of Civil and Environmental Engineering,
Kookmin University, Seoul, Korea
Abstract
The effect of wave breaking on vertical diffusion coefficient was described
by using a 1DV numerical model with one-equation turbulence closure. The
turbulent kinetic energy generated from the wave breaking was supplied at
the water surface, and was diffused down into the whole water column.
While the breaking-induced turbulence are diffused in the water column,
the vertical diffusion coefficient was modified by the additional turbulent
kinetic energy. The model was applied to five wave flow cases and three
wave and current flow cases to assess the effect of the wave breaking and
the current. The eddy viscosity or the vertical diffusion coefficient was
obtained from a simple relationship between the eddy viscosity and the
mixing length and the turbulent kinetic energy. The model results on the
horizontal velocity prof
Keywords
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