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| Analysis of Energy Characteristics in the Process of Freak Wave Generation | |
| 作者姓名： | 胡金鹏 张运秋 |
| 基金项目： | The work was financially supported by the National Natural Science Foundation of China |
| 摘 要： | The energy characteristics in the evolution of the wave train are investigated to understand the inherent cause of the freak wave generation. The Morlet wavelet spectrum method is employed to analyze the numerical, laboratory and field evolution data of this generation process. Their energy distributions and variations are discussed with consideration of corresponding surface elevations. Through comparing the energy characteristics of three cases, it is shown that the freak wave generation depends not only on the continuous transfer of wave train energy to a certain region where finally the maximum energy occurs, but also on the distinct shift of the converged energy to high-frequency components in a very short time. And the typical energy characteristics of freak waves are also given. |
| 关 键 词： | 能量特征 生成过程 畸形波 Morlet小波 能量特性 波谱方法 能量分布 最大能量 |
Analysis of energy characteristics in the process of freak wave generation |
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| Jin-peng Hu,Yun-qiu Zhang.Analysis of Energy Characteristics in the Process of Freak Wave Generation[J].China Ocean Engineering,2014,28(2):193-205. | |
| Authors: | Jin-peng Hu Yun-qiu Zhang |
| Institution: | 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, 510641, China 2. Naval Architecture and Ocean Engineering R & D Center of Guangdong Province, South China University of Technology, Guangzhou, 510641, China 3. Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China 4. Key Laboratory of Renewable Energy and Gas Hydrate, Chinese Academy of Sciences, Guangzhou, 510640, China |
| Abstract: | The energy characteristics in the evolution of the wave train are investigated to understand the inherent cause of the freak wave generation. The Morlet wavelet spectrum method is employed to analyze the numerical, laboratory and field evolution data of this generation process. Their energy distributions and variations are discussed with consideration of corresponding surface elevations. Through comparing the energy characteristics of three cases, it is shown that the freak wave generation depends not only on the continuous transfer of wave train energy to a certain region where finally the maximum energy occurs, but also on the distinct shift of the converged energy to high-frequency components in a very short time. And the typical energy characteristics of freak waves are also given. |
| Keywords: | freak wave generation process wavelet spectrum energy characteristics |
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