부유식 방파제의 반사-투과 경계조건을 적용한 항만 정온도의 해석

Abstract

The floating breakwater generaly has an excelent water exchanging capability, but with somelowering harbor tranquility due to the wave transmission underneath floating body. In the initial stage of design,it is thus required to investigate several alternatives of breakwater layout for their performance of harbortranquility. The present study aims to formulate a sort of reflection - transmission boundary condition of floatingbreakwater so that the existing numerical method using time dependent mild slope equation can stil be appliedto the case of floating breakwaters. The two and thre dimensional tests were each performed to demonstrate theperformance of the boundary condition. It was found that the reflection and transmission characteristics aroundthe breakwater were wel reproduced by the boundary condition. Finaly, the reflection-transmision boundarycondition were applied to a floating breakwater installed in an imaginary harbor with an irregular shape andbotom topography. The results surely showed that the present numerical method can effectively used in practicalworks related to the real sea construction of floating breakwaters.