An experimental study of run-up and loads on a vertical truncated cylinder in a solitary wave

An experimental study of run-up and loads on a vertical truncated cylinder in a solitary wave
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孤立波中垂直截头圆柱体的助跑和载荷实验研究

DOI:
10.1016/j.oceaneng.2020.108346
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发表时间:
2020-11
期刊:
影响因子:
5
通讯作者:
Hua Liu
Hua Liu
中科院分区:
工程技术2区
文献类型:
--
作者:
Qian Wang;Yongliu Fang;Hua Liu

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本研究旨在探讨海啸波与近海柱状结构之间的非线性相互作用。本文对孤立波作用下圆筒的升力和载荷过程进行了实验研究。提出了一种图像捕捉技术来跟踪助跑过程的时变过程。在波幅较大的情况下,观察到二次上升。在圆柱体背面观察到的流碰撞支持了关于二次峰成因的论点。六分量力天平的测量结果表明,惯性波浪力和浮力分别主导了圆柱体上的内向力和垂直力。在两个强迫过程中,由于自由表面在大波幅下的剧烈运动,都存在二次峰。讨论了不同波幅和截深对水动力特性的影响。可视化观测和量化数据为海啸相关海岸防护的理论研究和数值模拟提供了基准。
This work aims to investigate the nonlinear interaction between the tsunami-like wave and the offshore cylinder-style structure. An experimental study on the process of the wave-induced run-up and loads on the cylinder in a solitary wave is presented. An image capture technique is developed to trace the time-varying process of run-up. The secondary run-up is observed in the case of large wave amplitude. The observed streaming collision at the cylinder backside supports the argument on the cause of the secondary peak. The measurement from a six-component force balance shows that the inertial wave force and the buoyancy dominate the inline force and vertical force on the cylinder, respectively. The secondary peak exists in both forcing processes due to the violent motion of the free surface at the large wave amplitude. The influence of different wave amplitudes and truncated depths on the hydrodynamic characters is discussed. The visualized observation and the quantified data provide the benchmark for the theoretical study and the numerical simulation on the coastal protection related to the tsunami issue.
DOI: 10.1016/j.oceaneng.2018.08.064
发表时间: 2018-11
期刊: Ocean Engineering
影响因子: 5
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