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파랑집중에 의한 다방향 극한파 생성의 효율성에 관한 실험적 연구
홍기용(KEY-YONG HONG),류슈쉐(SHU-XUE LIU),양찬규(CHAN-KYU YANG) 한국해양공학회 2002 韓國海洋工學會誌 Vol.16 No.5
Extreme waves are generated in a model basin based on directional wave focusing. The targeted wave field is described by double summation method and it is applied to serpent-type wavemaker system. The extreme crest amplitude at a designed location is obtained by syncronizing the phases and focusing the directions of wave components. Two distinguished spectrums of constant wave amplitude and constant wave steepness are adapted to describe the frequency distribution of component waves. The surface profile of generated wave packets is measured by wave guage array and the effects of dominant spectral parameters governing extreme wave characteristics are investigated. It is found that frequency bandwidth, center frequency, shape of frequency spectrum and directional range play a significant role in the wave focusing. In particular, the directional effect significantly enhances the wave focusing efficinecy.