Effect of the Current-Wave Angle on the Local Scour Around Circular Piles
Effect of the Current-Wave Angle on the Local Scour Around Circular Piles
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DOI：
10.1061/(asce)ww.1943-5460.0000692
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发表时间：
2022-01
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影响因子：
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通讯作者：
Oscar de la Torre;M. Hann;Jon Miles;S. Stripling;D. Greaves
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文献类型：
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作者：
Oscar de la Torre;M. Hann;Jon Miles;S. Stripling;D. Greaves
本文研究了波流夹角对圆形桩周冲刷的影响。在普利茅斯大学（英国）的海岸、海洋和沉积物输运（COAST）实验室进行了一项实验研究，使用的是一个直径为0.125米的单桩和一个长8米、宽1.5米、高0.2米的沙坑。试验期间获得的结果表明，波浪和水流之间的角度对最大冲刷深度和时间尺度的过程的影响。与水流部分对齐的波前（65°）比垂直强迫条件（90°）产生更深的冲刷坑。部分逆流（115°）的波前产生的冲刷比前两种情况中的任何一种都要少。波浪的加入减小了最大冲刷深度，与仅水流的情况相比。冲刷坑的发展被认为是更迅速时，波添加到目前，与50%的最终冲刷实现了一半的时间。结果表明，波浪与水流的相对方向是冲刷预报的重要组成部分。DOI：10.1061/（ASCE）WW.1943-5460.0000692。© 2021美国土木工程师协会。作者关键词：冲刷;单桩;泥沙输移;波流相互作用。
This paper studies the effect of the wave front-current angle on the scour around a circular pile. An experimental study was carried out in the Coastal, Ocean and Sediment Transport (COAST) laboratory at the University of Plymouth (UK) using a single monopile of 0.125 m in diameter and an 8 m long by 1.5 m wide by 0.2 m high sand pit. The results obtained during the test campaign show the influence of the angle between waves and currents on both the maximum scour depth and the time scale of the process. Wave fronts partially aligned with current (65°) produce deeper scour holes than perpendicular forcing conditions (90°). Wave fronts partially against the current (115°) produce less scour than any of the two previous scenarios. The addition of waves reduced the maximum scour depth, compared with the current-only case. The development of the scour hole was found to be more rapid when waves are added to the current, with 50% of the final scour achieved in half the time. The results show that wave direction relative to the current is an important component in scour prediction. DOI: 10.1061/(ASCE)WW.1943-5460.0000692. © 2021 American Society of Civil Engineers. Author keywords: Scour; Monopile; Sediment transport; Wave-current interaction.