三维聚焦破碎波相关特性的试验研究——单频聚焦  

Experimental study on the correlation characteristics of three-dimensional focusing breaking wave-single frequency focusing

作　　者：王磊[1] 李金宣[1] 杨金凤 柳淑学[1] 刘元 WANG Lei;LI Jin-xuan;YANG Jin-feng;LIU Shu-xue;LIU Yuan(State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China;Department of Construction Engineering, Dalian University of Technology, Dalian 116024, China)

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,大连116024 [2]大连理工大学建设工程学部,大连116024

出　　处：《水道港口》2021年第1期22-29,共8页Journal of Waterway and Harbor

基　　金：国家自然科学基金(51739010,51879037);国家重点研发计划项目(2016YFC1401405,2016YFE0200100)。

摘　　要：文章采用波能聚焦的方法,在港池中模拟了三维聚焦波浪,包括未破碎波浪和破碎波浪。通过改变聚焦波浪的方向分布范围,研究方向分布对聚焦波波高分布、几何破碎指标以及能量损失等参数的影响。实验结果表明方向分布范围对波浪的传播和破碎都有显著的影响,波浪方向分布宽时,波浪方向有向主方向集中的现象;同时波浪的破碎指标较方向分布窄时要大,波浪越不易破碎。方向分布越宽时,最大破碎能量损失也越大,文章方向分布范围为[-60°,60°]时,最大的能量损失率可达到约45%。Three-dimensional focusing waves,including nonbreaking waves and breaking waves,were simulated in a wave basin by using the method of wave energy focusing.By changing the direction distribution range of the focusing wave,the influences of the direction distribution on the focused wave height distribution,geometric breaking index and energy loss were investigated.The experimental results show that the direction distribution range has a significant effect on wave propagation and breaking.When the wave direction range is wide,the wave direction is concentrated in the main direction.In addition,the wave breaking index is larger than when the direction distribution is narrow,and wave is not easily broken.The wider the directional distribution,the greater the maximum energy loss.When the directional distribution range in this paper is[-60°,60°],the maximum energy loss rate can reach about 45%.

关 键 词：聚焦波 方向分布 波浪破碎 

分 类 号：U65[交通运输工程—港口、海岸及近海工程] TV143[交通运输工程—船舶与海洋工程]