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Calculation of Wave Deformation and Wave Induced Current around an Underwater Shoal by Boussinesq Equation  

Chun Insik (Department of Civil Engineering, Konkuk University)
Seong Sangbong (Department of Civil Engineering, Konkuk University)
Kim Guidong (Department of Civil Engineering, Konkuk University)
Sim Jaeseol (Coastal and Harbor Engineering Division, Korea Ocean Research and Development Institute)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.17, no.3, 2005 , pp. 202-212 More about this Journal
Abstract
In the design of an of offshore structure located near an underwater shoal, the same amount of attention given to the wave height may have to be put to the wave induced current as well since some of the wave energy translates to the current. In the present study, two numerical models each based on the nonlinear Boussinesq equation and the linear mild slope equation are applied to calculate the wave deformation and secondly induced current around a shoal. The underwater shoal in Vincent and briggs' experiment (1989) is used here, and all non-breaking wave conditions of the experiment with various monochromatic and unidirectional or multidirectional spectral wave incidences are concerned. Both numerical models clearly showed wave induced currents symmetrically farmed along the centerline over the shoal. The calculated wave heights along a preset line also generally showed very nice agreements with the experimental values.
Keywords
Boussinesq equation; mild slope equation; wave induced current; underwater shoal; nonlinear wave propagation;
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