Solitary wave impacts on vertical and overhanging near-coast structures

Mei Huang; Andrew Kennedy; Tori TomiczekJoannes Westerink

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Solitary wave impacts on vertical and overhanging near-coast structures

机译：孤波对垂直和突出的影响近海结构

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In this paper, we investigate short-duration solitary wave impacts on overhanging near-coast structures, which are represented here as rectangular blocks protruding out from a vertical wall. Wave transformation is computed for a variety of scenarios using the OpenFOAM variant IHFOAM. In agreement with previous studies, the largest pressures and loads occur when there is a violent impact with near-breaking or just-broken waves on the wall, causing a strong vertical jet. This condition most easily occurs with steep near-shore slopes. Maximum vertical loads on overhangs occur at significantly higher block elevations than are found for maximum horizontal loads. Overhang lengths have small effects on magnitudes of horizontal forces, but strongly increase positive uplift vertical loads. Although maximum instantaneous vertical loads can significantly exceed instantaneous horizontal loads, time-averaged vertical loads decrease rapidly with increasing averaging period while horizontal loads show more modest decreases; horizontal loads significantly exceed vertical loads for large averaging periods. This indicates that the pressure-impulse in the wall-generated vertical jets is much less than that arising from the horizontal solitary wave impacts.

机译：在本文中,我们研究短期对悬臂近海孤波影响结构,在这里表示突出从垂直矩形块墙。各种各样的场景使用OpenFOAM变体IHFOAM。最大压力和加载时出现有一个near-breaking或者干脆不能暴力的影响墙上的波浪,造成强烈的垂直喷射流。这种情况最容易发生在陡峭近岸的斜坡。悬岩发生在更高的块海拔比发现的最大水平负载。级水平,但强烈增加积极提升垂直载荷。最大瞬时垂直载荷大大超过瞬时水平装载的时均垂直下降迅速提高平均周期时间水平加载显示更温和减少;横向载荷显著超过垂直负载大的平均时间。的pressure-impulse wall-generated垂直喷流比因要少得多水平孤波的影响。

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《International Journal of Ocean and Coastal Engineering》 |2018年第3期|356-370|共15页
作者
Mei Huang; Andrew Kennedy; Tori TomiczekJoannes Westerink;
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作者单位

Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, USA;

Department of Naval Architecture and Ocean Engineering, United States Naval Academy, Annapolis, USA;

Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, USA;

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原文格式 PDF
正文语种英语
中图分类 U-076;
关键词
horizontal force; WAVE IMPACT; Loading waveformvertical loadsSolitary waveshorizontal loadsOverhangWater wavesCoastal structuresvertical;

机译：水平力;波影响;装载waveformvertical loadsSolitary waveshorizontalloadsOverhangWater wavesCoastalstructuresvertical;

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Solitary wave impacts on vertical and overhanging near-coast structures

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