| 模拟畸形波的聚焦波浪模型 |
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| 引用本文： | 赵西增,孙昭晨,梁书秀.模拟畸形波的聚焦波浪模型[J].力学学报,2008,40(4):447-454. |
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| 作者姓名： | 赵西增 孙昭晨 梁书秀 |
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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 大连理工大学海岸及近海工程国家重点实验室 大连理工大学海岸及近海工程国家重点实验室 |
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| 摘 要： | 利用改进的高阶谱方法建立了模拟极限波的二维聚焦模型，通过与Baldock(1996)
的实验结果和理论
值的比较，验证了模型的正确性，并分析了波浪非线性的相互作用对聚焦结果的影响. 通过
改进Longuet-Higgins海浪模型，给出了4种实验室聚焦模拟畸形波的波浪模型：极限波
聚焦模型+随机波模型；极限波聚焦模型+规则波模型；相位角分布范围调制聚焦模型；
相同相位角组成波个数调制聚焦模型. 基于上述完全非线性数值波浪模型，采用不同的能
量分配方式，在有限模拟长度和时间内得到了具有不同$H_{\max}/H_{s}$值的畸形波.
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| 关 键 词： | 高阶谱方法 畸形波 聚焦波 Longuet-Higgins模型 角调制 |
| 收稿时间： | 2007-06-06 |
FOCUSING MODELS FOR GENERATING FREAK WAVES |
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| Zhao Xizeng,Sun Zhaochen,Liang Shuxiu.FOCUSING MODELS FOR GENERATING FREAK WAVES[J].chinese journal of theoretical and applied mechanics,2008,40(4):447-454. |
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| Authors: | Zhao Xizeng Sun Zhaochen Liang Shuxiu |
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| Institution: | The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,China The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,China The State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024,China |
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| Abstract: | A 2-D extreme wave focusing model is presented on
the basis of enhanced high-order spectral (HOS) numerical method,
validated with the experimental and theoretical results, and applied to
investgate the effect of wave-wave nonlinear interaction on the wave
focusing amplitude. Based on improved Longuet-Higgins wave model, four wave
focusing models for freak wave generation are proposed: 1.extreme wave model
with random wave model; 2. extreme wave model with regular wave model; 3.
wave focusing model from phase-interval modulation; 4. wave focusing model
from wave number modulation with the same phase. With the application of
different energy distribution techniques in the four wave focusing models,
freak wave with differentvalues of $H_{\max}/H_{s}$ are obtained in the
finite space and time domains. |
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| Keywords: | high-order spectral method freak wave focused waves Longuet-Hinggins model phase modulation |
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