2024 Volume 80 Issue 18 Article ID: 24-18035
In order to clarify the influence of rubble mound configurations at the head of vertical breakwater on harbor tranquility, we have adopted the following two typical cases; one is comprised of depth contour lines with right angled corners (angular-type mound) and another one with rounded corners (rounded-type mound). The extended Green's function method to variable water depths was applied to compute the wave height distributions in the model harbor with a detached breakwater of composite type for both regular and irregular waves. Here, the two typical configurations of rubble mound at the breakwater head were examined to know the effectiveness for harbor tranquility. As a preliminary study to the above, we have also carried out the examinations on wave deformations by shoals of two different types, such as a circular shoal and a square shoal. As a result of examinations, it is clarified that the angular-type mound may cause much higher waves at the harbor pier on shore side. It is also seen that a square shoal may converges much more wave energy at the back of the shoal.
