Abstract
This paper describes physical and numerical modelling of the hydrodynamics associated with an L-shaped breakwater. The physical modelling was carried out using the UK Coastal Research Facility (UKCRF) at HR Wallingford as a part of a UK government EPSRC (Engineering and Physical Science Research Council) funded research project. An L-shaped breakwater was built on a plain bed with 1:20 bed slope. Normal and oblique monochromatic (MON) and longcrested random (LCR) incident waves were employed in the tests. Measurements of waves and currents were taken around the breakwater. A 2D wave periodaveraged wave/current model was applied to the laboratory situations. The numerical model allowed for wave diffraction-refraction and wave/current interaction to be considered. Comparisons of the numerical model results with the experimental data were made and good agreement in both the wave-induced currents and wave heights was obtained. The results demonstrated the capability of the model in dealing with hydrodynamics over a complex bathymetry, in particular, the hydrodynamics associated with wide-angle diffraction.
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