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| 非线性聚焦生成畸形波规律之研究 | |
| 引用本文： | 张运秋,胡金鹏,张宁川. 非线性聚焦生成畸形波规律之研究[J]. 水道港口, 2010, 31(3): 153-156,180 |
| 作者姓名： | 张运秋 胡金鹏 张宁川 |
| 作者单位： | 1. 中科院广州能源研究所,中国科学院可再生能源与天然气水合物重点实验室,广州510640 2. 华南理工大学,土木与交通学院,广州,510641 3. 大连理工大学,海岸和近海工程国家重点试验室,大连,116023 |
| 基金项目： | 国家"863"计划项目，国家自然科学基金项目，中科院广州能源研究所所长创新基金项目 |
| 摘 要： | 非线性聚焦是畸形波生成的一种可能机理。采用可以描述非线性聚焦现象的四阶修正非线性薛定谔方程,模拟了边带扰动条件下波列空间演化过程中畸形波的生成。不同初始边带扰动条件和不同波陡等情况下的数值试验结果表明,满足边带不稳定性条件时,初始边带扰动条件和波陡对畸形波的生成具有重要的影响,并给出了畸形波生成的规律。 |
| 关 键 词： | 畸形波 非线性聚焦 边带扰动 生成规律 |
Investigation of freak wave generation via nonlinear focusing |
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| ZHANG Yun-qiu,HU Jin-peng,ZHANG Ning-chuan. Investigation of freak wave generation via nonlinear focusing[J]. Journal of Waterway and Harbour, 2010, 31(3): 153-156,180 | |
| Authors: | ZHANG Yun-qiu HU Jin-peng ZHANG Ning-chuan |
| Affiliation: | ZHANG Yun-qiu1,HU Jin-peng2,ZHANG Ning-chuan3 (1. Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Key Laboratory of Renewable Energy and Gas Hydrate,Guangzhou 510640,China,2. School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510641,3. State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China) |
| Abstract: | A possible mechanism of freak wave generation is nonlinearity focusing.Generation of freak waves under the condition of sideband disturbance was numerically simulated within the framework of the modified fourth-order nonlinear Schroedinger equation which can describe nonlinear focusing phenomenon.Numerical experiments were performed for different sideband disturbances and wave steepness.Results show that initial sideband disturbances and wave steepness play an important role in the formation of freak waves ... |
| Keywords: | freak waves nonlinear focusing sideband disturbance generation rule |
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