| 变水深对畸形波及其时频能量谱的影响 |
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| 引用本文： | 崔成,张宁川,郭传胜,房卓.变水深对畸形波及其时频能量谱的影响[J].海洋学报,2011,33(6):173-179. |
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| 作者姓名： | 崔成 张宁川 郭传胜 房卓 |
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| 作者单位： | 大连理工大学 海岸及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： | 使用VOF (volume of fluid)方法实现了变化水深条件下畸形波的数值模拟,使用小波分析方法计算模拟结果的时频能量谱,发现变化水深可以加强波浪的非线性相互作用,使转化到高频端的能量更多,产生了不对称程度更大的畸形波.
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| 关 键 词： | 畸形波 小波分析 变水深 时频能量谱 |
| 收稿时间： | 2010/8/11 0:00:00 |
| 修稿时间： | 4/6/2011 12:00:00 AM |
Impact of water depth variation on simulated freak waves and their time-frequency energy spectrum |
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| CUI Cheng,ZHANG Ning-chuan,GUO Chuan-sheng and FANG Zhuo.Impact of water depth variation on simulated freak waves and their time-frequency energy spectrum[J].Acta Oceanologica Sinica (in Chinese),2011,33(6):173-179. |
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| Authors: | CUI Cheng ZHANG Ning-chuan GUO Chuan-sheng and FANG Zhuo |
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| Institution: | State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology, Dalian 116024, China |
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| Abstract: | The volume of fluid (VOF) method is used to numerically simulate freak wave under the varying water depth condition, and the wavelet analysis method is applied to the numerical results to investigate the energy distribution on the time-frequency domain. It is concluded that water depth variation can enhance nonlinear wave-wave interactions which makes much more energy to transfer to high harmonics and freak waves with higher asymmetry to generate. |
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| Keywords: | freak wave wavelet analysis water depth variation time-frequency energy spectrum |
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