Numerical and Experimental Study on Wave Deformation and Overtopping around Vertical Seawall in Coral Reef Sea Area

摘要

The main purpose of this study is to investigate wave deformation over a coral reef and wave overtopping characteristics around a vertical seawall by carrying out hydraulic model experiments and numerical computations with a two-dimensional numerical wave flume based on a VOF method 'CADMAS-SURF'. The comparison of the numerical and experimental results reveals that the CADMAS-SURF can reproduce well the experimental results regarding wave deformation and wave overtopping rate. The results also indicate that the mean water level increases due to successive wave breaking over the reef and wave setup takes place remarkably. The wave overtopping rate for the reef topography is found to be much larger than one on the mild slope.