Extreme Wave Runup in a Coastal Zone: Experimental and Numerical Modelling
Extreme Wave Runup in a Coastal Zone: Experimental and Numerical Modelling
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沿海地区的极端波浪上升：实验和数值模拟
DOI：
10.1061/9780784480304.079
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Whittaker C
中科院分区：
文献类型：
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作者：
Whittaker C
基于boussinesq -非线性耦合浅水方程格式，我们提出了一系列互补的物理实验和数值模型模拟，以研究平面海滩上的极端波浪。使用NewWave设计波将极端入射波建模为聚焦波组，并将这些聚焦波产生的最大上升高度与相关不规则波上升模拟中记录的极端上升高度进行比较。聚焦波群的最大增益与聚焦波群的线性振幅、聚焦位置和聚焦处的相位有很强的相关性。随机海域中不规则波的极值与等效入射聚焦波组的极值比较好，这些波组的振幅由瑞利统计和优化的聚焦位置和相位设置。
We present a series of complementary physical experiments and numerical model simulations based on a coupled Boussinesq-nonlinear shallow water equation scheme to investigate extreme wave runup on a plane beach. Extreme incident waves are modelled as focused wave groups using the NewWave design wave, and the maximum runup elevations generated by these focused waves are compared to the extreme runup elevations recorded during related irregular wave runup simulations. The maximum runup of a focused wave group exhibits strong dependence on the linear amplitude, focus location and phase at focus of the focused wave group. The extreme values of irregular wave runup in a random sea compare well to the runup values from equivalent incident focused wave groups with amplitudes set with Rayleigh statistics and optimised focus position and phase.