ハイブリッド法を用いた有限水深域内の浸水平板周辺の 3次元波動場に関する計算

抄録

It has been suggested that aquacultural facilities should be set up in open sea areas because of decreasing fishing grounds in calm bays. n these areas it is necessary to construct wave control structures so that aquacultural facilities, e.g. net cages, are not carried away. In this study wave deformations around a submerged plate as wave controI structures are estimated by solving linearized three-dimensional wave diffraction problems using the hybrid method. In some cases, the plate size, plate set up condition and incident wave condition are changed. Our calculation results show that low wave height areas are fomed into belt-shapes from a side of the plate. However, When kh≦1.0 or w/h≦1.0 (k is the wave number, h is the water depth and w is the width of the plate), it is not expected that the wave could be controlled by the submerged plate. It is shown that the low wave height area of H/Hi≦0.6 (H and Hi are the wave height at a calculated point and the incident wave height, respectively) is larger when w/h≧2.0, d/h≦0.3 and the sloping angle of the plate≧30 (d is the depth of the plate).