The main purpose of the breakwater, which is the most typical element in harbor plan, is to maintain the calm area in a harbor by preventing waves propagated from offshore. But, because of blocking nature of the impermeable breakwater, which causes fundamental environmental changes in coastal water circulation system, has brought about serious environmental problems. In recent years, the construction of the permeable breakwater, which allows the seawater exchange to improve the water quality in a harbor, is being carried out. Although the permeable breakwater is able to improve the water quality by expediting the seawater exchange, it can create transmitted waves, which could disturb the calmness in a harbor. In this study, the numerical models was established to analyze the wave field in a harbor which is constructed in the permeable breakwater. The time-dependent mild-slope equation was used as the governing equation for the model, and the arbitrary transmitted coefficient condition was used as the boundary condition on the permeable breakwater. For the verification of the model, the two dimensional hydraulic model test was used to analyze the transmitted wave of a permeable breakwater. Also, the applicability of the model was examined for the real harbor with permeable breakwater by comparing the analysis of the wave field, which was obtained by applying the model to the Jeju New Harbor, with the results of the three dimensional hydraulic model test.
展开▼
