| 孤立波激发港口振荡的数值研究 |
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| 引用本文： | 马小舟,孙忠顺,董国海. 孤立波激发港口振荡的数值研究[J]. 计算力学学报, 2014, 31(4): 511-516 |
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| 作者姓名： | 马小舟 孙忠顺 董国海 |
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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 116024;大连理工大学 海岸和近海工程国家重点实验室, 大连 116024;大连理工大学 海岸和近海工程国家重点实验室, 大连 116024 |
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| 基金项目： | 国家自然科学基金（51009024，51221961）；高等学校博士学科点专项科研基金（20100041110005）资助项目. |
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| 摘 要： | 采用Boussinesq数值波浪模型模拟了在孤立波作用下复杂形状港内水体的响应。孤立波在进入港口后会引起港内水体的振荡并被反射,港内波面扰动是一个随时间变化的瞬变波动过程。通过基于连续小波变换的时频分析结果并与现有的理论值进行比较发现,孤立波引起的振荡其主要能量主要集中在港池第一振荡模态上,这为估计复杂形状港口的自振频率提供了一个可行的方法。
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| 关 键 词： | 孤立波 Boussinesq波浪模型 小波分析 港口 港池固有频率 |
| 收稿时间： | 2013-03-02 |
| 修稿时间： | 2013-05-31 |
Numerical study on the harbor oscillations excited by a solitary wave |
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| MA Xiao-zhou,SUN Zhong-shun and DONG Guo-hai. Numerical study on the harbor oscillations excited by a solitary wave[J]. Chinese Journal of Computational Mechanics, 2014, 31(4): 511-516 |
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| Authors: | MA Xiao-zhou SUN Zhong-shun DONG Guo-hai |
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| Affiliation: | 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: | The response of a harbor to an incident solitary wave is simulated by a numerical Boussinesq wave model.The propagation of a solitary wave into a harbor induces a transient disturbance and the solitary wave is reflected.The analysis results based on the continuous wavelet transform show that the energy of the disturbance caused by the solitary wave concentrates at the first eigen frequency of the harbor, which indicate a possible method of estimating the fundamental frequency of a complex shaped harbor. |
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| Keywords: | solitary wave Boussinesq wave model wavelet transform analysis harbor harbor natural frequencies |
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