Similarity solution of oblique impact of wedge-shaped water column on wedged coastal structures

Similarity solution of oblique impact of wedge-shaped water column on wedged coastal structures
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楔形水柱斜向冲击对楔形海岸结构物的相似解

DOI:
10.1016/j.coastaleng.2008.09.008
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发表时间:
2009-04
影响因子:
4.4
通讯作者:
--
中科院分区:
工程技术1区
文献类型:
--
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分析了冲击波斜向冲击海岸结构的初始阶段。该问题通过不对称水楔和不对称固体楔的倾斜碰撞进行建模。基于波的传入速度与重力加速度之比远大于感兴趣的时间尺度的假设,忽略重力对流动的影响。然后使用基于速度势理论的相似求解方法。这种相似流问题是通过复杂平面中的柯西定理用边界元法来解决的。提供了波高和压力分布的结果,包括力和力矩、不同冲击角度的影响以及倾斜冲击的影响。特别是,观察到固体楔形尖端附近的负压并讨论了其含义。
The initial stage of plunging wave impact obliquely on coastal structures is analysed. The problem is modelled through an oblique collision of an asymmetrical water wedge and an asymmetrical solid wedge. The gravity effect on the flow is ignored based on the assumption that the ratio of the incoming speed of the wave to the acceleration due to gravity is much larger than the time scale of interest. Similarity solution method based on the velocity potential theory is then used. The problem of this similarity flow is solved by a boundary element method through the Cauchy theorem in the complex plan. Results for the wave elevation and pressure distribution are provided, including the forces and moments, effects of different impact angles and the effects of oblique impact are investigated. In particular, negative pressure near the tip of the solid wedge is observed and its implications are discussed.
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