Numerical simulation of spectrum wave transformation and berthing stability in Jinhai Bay

The convention method of berthing stability study by physical scaled model was replaced by purely numerical model based on modified Boussinesq type wave equations in Jinhai Bay, Guangdong. Directional spectrum waves of mixed wind wave and surge wave was generated in pseudo three dimensional numerical wave basin. In front of vertical walls, typical reflection coefficient of 0.80 was introduced, and around the sloped breakwaters the reflection coefficients of 0.50~0.60 were applied. The calculation domain was located in Da-Ya Bay, with directional mixed wave incoming from WSW (west-south-west). By purely numerical method, the berthing stability was studied in accordance with the Code of Hydrology for Sea Harbor, China (“the Code”). It is concluded the numerical model is of satisfactory accuracy and can be of engineering reference value in the design and planning of coastal structures and harbors.