| 随机波浪作用下近岸波流场的数值模拟 |
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| 引用本文： | 唐军,沈永明,崔雷,郑永红.随机波浪作用下近岸波流场的数值模拟[J].力学学报,2008,40(4):455-463. |
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| 作者姓名： | 唐军 沈永明 崔雷 郑永红 |
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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,116023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和近海工程国家重点实验室中国科学院青岛生物能源与过程研究所 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家自然科学基金，教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 结合近岸波浪抛物型缓坡模型和近岸波流场模型，对近岸不规则波浪及其破碎后所产生的流场进行了数值模拟. 在不规则波浪场的模拟中，采用JONSWAP波浪谱对入射单向不规则波浪要素按等分频率法进行离散，应用考虑波浪不规则性和破碎效应的抛物型缓坡方程对波浪场进行数值模拟，并基于抛物型缓坡方程中的波浪势函数等参数计算波浪辐射应力，以波浪辐射应力为主要动力因素基于近岸流数学模型对近岸波浪破碎所产生的近岸流场进行数值模拟，并对数值模拟结果进行了验证. 模拟结果表明该模型可有效地用于研究波浪破碎产生的近岸波流场.
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| 关 键 词： | 不规则波 JONSWAP波浪谱 抛物型缓坡方程 波浪破碎 近岸流 |
| 收稿时间： | 2007-02-14 |
| 修稿时间： | 2007-12-11 |
NUMERICAL SIMULATION OF RANDOM WAVE-INDUCED NEAR-SHORE CURRENTS |
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| Tang Jun,Shen Yongming,Cui Lei,Zheng Yonghong.NUMERICAL SIMULATION OF RANDOM WAVE-INDUCED NEAR-SHORE CURRENTS[J].chinese journal of theoretical and applied mechanics,2008,40(4):455-463. |
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| Authors: | Tang Jun Shen Yongming Cui Lei Zheng Yonghong |
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| Institution: | State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023}, ChinaState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023}, ChinaState Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023}, ChinaQingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266071, China |
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| Abstract: | Near-shore currents induced by the irregular water waves
and their breaking were numerically simulated based on the parabolic mild
slope equation and near-shore current model. The unidirectional incident
irregular wave was first put into being discrete with the Jonswap wave
spectrum and then simulated using the parabolic mild slope equation to
obtain the wave radiation stresses with the effects of the wave irregularity
and breaking. The breaking-wave-induced near-shore currents were
numerically simulated to further validate the numerical model. The numerical
results show that the model can be applied to study the
breaking-wave-induced currents. |
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| Keywords: | irregular water wave JONSWAP wave spectrum parabolic mild slope equation wave radiation stress near-shore current |
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