Analytical solutions for oscillations in a harbor with a hyperbolic-cosine squared bottom

Analytical solutions for oscillations in a harbor with a hyperbolic-cosine squared bottom
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双曲余弦平方底港口振动的解析解

DOI:
10.1016/j.oceaneng.2014.03.027
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发表时间:
2014-06
期刊:
影响因子:
5
通讯作者:
郑艳娜
郑艳娜
中科院分区:
工程技术2区
文献类型:
--
作者:
王岗;郑金海;梁秋华;郑艳娜

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基于线性浅水近似,分析研究了双曲余弦平方底矩形港口中由入射垂直波引起的纵向振荡,该纵向振荡可以通过结合第一类和第二类勒让德函数来描述。详细研究了地形参数对共振谱和响应的影响。当港湾宽度与波长同数量级时,由于波的折射,可能存在横向振荡。推导了双曲余弦平方底港内横向振荡的解析解。这些振荡通常是驻边波。发现横向特征频率不仅与港口宽度有关,而且与变化的水深参数有关。
Based on the linear shallow water approximation, longitudinal oscillations in a rectangular harbor with a hyperbolic-cosine squared bottom induced by incident perpendicular waves are analytically investigated, which could be described by combining the associated Legendre functions of the first and second kinds. The effects of topographic parameters on the resonant spectrum and response are examined in detail. When the width of the harbor is of the same order magnitude as wavelengths, transverse oscillations may exist due to the wave refraction. Analytic solutions for transverse oscillations within a harbor of hyperbolic-cosine squared bottom are derived. These oscillations are typically standing edge waves. The transverse eigenfrequency is found to be related not only to the width of the harbor, but also to the varying water depth parameters.
DOI: 10.1016/j.oceaneng.2012.09.010
发表时间: 2013
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