Effects of offshore fringing reefs on the transient harbor resonance excited by solitary waves
Effects of offshore fringing reefs on the transient harbor resonance excited by solitary waves
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近海岸礁对孤立波激发的瞬态港口共振的影响
DOI：
10.1016/j.oceaneng.2019.106422
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发表时间：
2019-10
影响因子：
5
通讯作者：
Zhou Li
中科院分区：
文献类型：
--
作者：
Gao Junliang;Ma Xiaozhou;Dong Guohai;Zang Jun;Ma Yuxiang;Zhou Li
本文首先研究了近海礁体地形的变化对不同波高孤波引起的瞬态共振的影响。瞬态谐振由完全非线性 Boussinesq 模型 FUNWAVE-TVD 进行模拟。本文重点研究礁面平面坡度、礁脊宽度、泻湖宽度和礁面剖面形状的变化如何影响港内波浪能量分布、总波浪能量和最大振荡（上升）。结果表明，波浪能量分布的均匀性、总波浪能量和入射孤立波的放大系数（定义为最大上升与入射波高的比值）都随着礁面平面坡度的增加而逐渐减小。对于其他三个地形参数（即礁脊宽度、泻湖宽度和礁面轮廓形状），它们对港内共振波参数的影响变得更加复杂。并非港内所有的共振波参数（即波能分布的均匀性、总波能和入射孤立波的放大系数）都随这三个地形参数呈现单调变化。
In this article, effects of the variation of the offshore reef topography on the transient resonance induced by solitary waves with various wave heights are first investigated. The transient resonance is simulated by a fully nonlinear Boussinesq model, FUNWAVE-TVD. This paper focuses on investigating how the variations of the plane reef-face slope, the reef-ridge width, the lagoon width and the reef-face profile shape affect the wave energy distribution, the total wave energy and the maximum oscillation (runup) inside the harbor. Results indicate that all of the uniformity of the wave energy distribution, the total wave energy and the amplification factor of the incident solitary wave (defined as the ratio of the maximum runup to the incident wave height) are shown to gradually decrease with the plane reef-face slope. For the other three topographical parameters (i.e., the reef-ridge width, the lagoon width and the reef-face profile shape), their influences on the resonant wave parameters inside the harbor becomes more complicated. Not all of the resonant wave parameters inside the harbor (i.e., the uniformity of the wave energy distribution, the total wave energy and the amplification factor of the incident solitary wave) present monotonic changes with these three topographical parameters.
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