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Numerical analysis of tsunami-like wave impact on horizontal cylinders

机译：海啸状波浪冲击水平圆柱体的数值分析

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During the past few decades, several tsunami events have caused tremendous devastation to onshore and offshore infrastructures. Although the tsunami waves have been studied with solitary waves since 19705, the wave profile differences between solitary and tsunami waves directly result in the significant differences in their energy carrying capability and potential destructive impacts. In this study, a tsunami-like wave profile has been adopted by using a composition of solitary waves to simulate a real tsunami wave profile. A two-phase flow model was numerically resolved with the finite volume method with the volume of fluid method to track the free surface. The numerical model was first validated against the experimental and theoretical studies with the solitary wave. And then, the impact of tsunami waves at submerged horizontal cylinders was numerically studied. The hydrodynamic differences between the solitary wave and tsunami-like wave passing the submerged cylinders have been discussed, which shows the significant differences on the punching forces and the velocity field evolution around the cylinders. Moreover, the effects of wave height and submersion depth on the hydrodynamic loads were considered, and the influence of the spacing distance on the interactions between cylinders in a tandem arrangement was also investigated.
机译：在过去的几十年中，几次海啸事件对陆上和海上基础设施造成了巨大破坏。尽管自19705年以来就对海啸波进行了孤波研究，但孤波和海啸之间的波廓差异直接导致其能量承载能力和潜在的破坏性影响存在显着差异。在这项研究中，通过使用孤立波的组成来模拟真实的海啸波剖面，采用了类似海啸的波剖面。用有限体积法和流体体积法对两相流模型进行数值求解，以跟踪自由表面。首先通过孤立波对数值模型进行了实验和理论研究验证。然后，数值研究了海啸对水下圆柱体的影响。讨论了通过淹没圆柱的孤波和海啸状波之间的流体动力差异，这表明冲压力和圆柱周围的速度场演化存在显着差异。此外，考虑了波高和浸没深度对流体动力载荷的影响，并研究了间距对串联布置中圆柱体之间相互作用的影响。

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