Deep-water plunging wave pressures on a vertical plane wall
Deep-water plunging wave pressures on a vertical plane wall
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DOI：
10.1098/rspa.1988.0053
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发表时间：
1988-05
期刊：
影响因子：
--
通讯作者：
E. Chan;W. Melville
中科院分区：
文献类型：
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作者：
E. Chan;W. Melville
本文系统地研究了深水中由受控的纵倾波引起的作用在直墙上的压力。同时测量的运动学和动力学的影响表明，影响发生通过聚焦的入射波到墙上，捕获一些空气的过程中。冲击导致高的脉冲压力，并且截留空气的动力学可导致甚至更高的压力以及压力振荡。冲击压力可以分解为由于冲击的流体动力学和捕获的空气动力学的贡献。对后者仍然知之甚少，现阶段不可能将实测压力最大值从实验室尺度外推到原型尺度。总的来说，冲击压力的特性和分布显著地依赖于相对于波破碎位置的壁位置。然而，在每个壁位置处，相同的入射波条件可能产生显著不同的冲击压力，这主要是因为波浪破碎期间捕获的空气动力学的随机性。
A systematic study is presented of pressures on a vertical wall resulting from controlled, plunging waves in deep water. Simultaneous measurements of the kinematics and dynamics of impact show that impact occurs through the focusing of the incident wave front onto the wall, trapping some amount of air in the process. Impact leads to high impulsive pressures, and the dynamics of trapped air can lead to even higher pressures coupled with pressure oscillations. Impact pressures may be decomposed into contributions due to the hydrodynamics of impact and the trapped-air dynamics. The latter is still poorly understood and the extrapolation of measured pressure maxima from laboratory scales to prototype scales is at this stage impossible. Overall, the characteristics and distributions of impact pressures depend significantly on the wall location relative to the wave-breaking location. However, at each wall location, identical incident wave conditions could yield significantly different impact pressures, mainly because of the randomness of the trapped-air dynamics during wave breaking.