| 高阶谱方法建立三维畸形波聚焦模拟模型 |
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| 引用本文： | 赵西增,孙昭晨,梁书秀.高阶谱方法建立三维畸形波聚焦模拟模型[J].海洋工程,2009,27(1):33-39. |
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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,辽宁,大连116023 |
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| 摘 要： | 三维波浪方向聚焦是畸形波形成机理之一.为了模拟和分析这一现象,在势流理论内基于改进的高阶谱(HOS)方法,给出了时空聚焦方式生成畸形波的三维波浪模型.利用满足周期性边界条件的具有不同频率、不同传播方向的各独立组成波,分隔了计算域内的能量;使各组成波采用等振幅能量分布的形式,聚焦模拟了实验尺度畸形波;把高阶谱方法拓展到大尺度的开敞海域,考虑波浪方向分布的影响,聚焦模拟了大尺度畸形波的发展和形成过程.
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| 关 键 词： | 高阶谱 畸形波 方向谱 波浪聚焦 数值波浪模型 |
| 收稿时间： | 2008/7/23 0:00:00 |
| 修稿时间： | 2008/11/21 0:00:00 |
Focusing model for generating 3-D freak waves based on HOS method |
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| ZHENG Jin-hai and TANG Yu.Focusing model for generating 3-D freak waves based on HOS method[J].Ocean Engineering,2009,27(1):33-39. |
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| Authors: | ZHENG Jin-hai and TANG Yu |
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| Institution: | State Key Lab of Coastal and Offshore Engineering;Dalian University of Technology;Dalian 116023;China |
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| Abstract: | Three-dimensional directional wave focusing is one of the mechanisms that contribute to the generation of freak waves.To simulate and analyze this phenomenon, a three dimensional wave focusing model is studied within the framework of potential flow theory.The model for simulating fully nonlinear water waves is presented based on enhanced high-order spectral(HOS) numerical method.Total energy is divided by wave components having different directionality and wave frequencies in periodic domain.Small-scale fre... |
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| Keywords: | high order spectral method freak wave directional spectrum wave focusing numerical wave modeling |
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