| 数值模拟生成畸形波的一种新方法 |
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| 引用本文： | 裴玉国,张宁川,张运秋.数值模拟生成畸形波的一种新方法[J].海洋通报,2007,26(2):71-77. |
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| 作者姓名： | 裴玉国 张宁川 张运秋 |
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| 作者单位： | 大连理工大学海岸和近海工程国家重点实验室,辽宁,大连,116024 |
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| 基金项目： | 教育部基金重点资助项目(104061) |
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| 摘 要： | 通过理论分析和数值模拟,结果证明利用Longuet-Hinggins模型可以得到包含畸形波的随机波列,但在组成波的初相位随机分布的条件下,畸形波发生的概率很低且其畸形程度较小。调整组成波的初相位,增加具有相同初相位的组成波个数,可增大畸形波发生的概率,而且所得畸形波的畸形程度也相应增大。将模拟得到的畸形波与实测畸形波进行了比较,发现它们的波形很相似,表明这种模拟方法是可行有效的。
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| 关 键 词： | 畸形波 Longuet-Hinggins模型 数值模拟 |
| 文章编号： | 1001-6932（2007）02-0071-0007 |
| 修稿时间： | 2006-01-172006-05-16 |
A New Approach to the Numerical Simulation of Freak Wave |
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| PEI Yuguo,ZHANG Ningchuan,ZHANG Yunqiu.A New Approach to the Numerical Simulation of Freak Wave[J].Marine Science Bulletin,2007,26(2):71-77. |
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| Authors: | PEI Yuguo ZHANG Ningchuan ZHANG Yunqiu |
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| Institution: | State Key Lab.of Coastal and Offshore Eng., Dalian University of Technology, Dalian 116024, Liaoning, China |
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| Abstract: | In the present paper, the method of generating freak wave in short time wave series was proposed, using mathematical simulation and theoretical analysis. Freak waves in a random sea state were simulated by the Longuet-Hinggins Model. The results show that when the initial phases distribute symmetrically, the freak waves can hardly be gotten. However, when the initial phases distribute asymmetrically, which means when more frequency components have the same initial phases, the freak waves can be simulated more efficiently and the wave figure can be more anomaly. Compared with the record of freak waves, the shape of the simulated freak wave is consistent with the measurements very well. |
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| Keywords: | freak wave Longuet-Hinggins Model numerical simulation |
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