3-D Beach Deformation around an Offshore Man-Made Island due to Multi-Directional Random Waves

摘要

In this paper, the pick up rate of sand from sandy sea bed, convection and diffusion of suspended sediment and bed load sediment are modeled based on large wave flume experiments. A new numerical model for 3-dimensional beach deformation due to multi-directional random waves is developed and applied to the sea area around an offshore man-made island. The validity of this numerical model is verified through comparison with the 1/150-scale physical model tests subject to the man-made island and the conventional numerical model by Watanabe et al. (1986).