Analysis of Multi-directional Random Waves Propagating over Multi Arrayed Submerged Breakwaters as Varying Crown Widths

폭 변화에 따른 다열 불투과성 수중방파제를 통과하는 다방향 불규칙파랑 해석

In this study, transmission and reflection of multi-directional random waves propagating over multi-arrayed submerged breakwaters are investigated using eigenfunction expansion method. The numerical analysis on the wave energy reflection of submerged breakwaters with various crown widths is carried out. Strong wave reflection is occurred at the Bragg reflection condition of the peak frequency. When relative heights and crown widths of breakwaters are equal to 0.6 and 0.4h, respectively, more than 25% of wave energy is reflected to off shore.