Effects of Free Heave Motion on Wave Forces on Two Side-by-Side Boxes in Close Proximity Under Wave Actions
Effects of Free Heave Motion on Wave Forces on Two Side-by-Side Boxes in Close Proximity Under Wave Actions
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DOI：
10.1007/s13344-021-0045-9
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发表时间：
2021-09
影响因子：
1.6
通讯作者：
Zhimin He;Junliang Gao;J. Zang;Hong-zhou Chen;Qian Liu;G. Wang
中科院分区：
文献类型：
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作者：
Zhimin He;Junliang Gao;J. Zang;Hong-zhou Chen;Qian Liu;G. Wang
利用OpenFOAM软件分析了波浪作用下两个并排箱体上的波浪力。上游箱体在波浪作用下自由起伏，而下游箱体保持固定。为了进行比较，还考虑了两个盒子都固定的配置。研究了上游箱体升沉运动对波浪荷载的影响，包括水平波浪力、垂直波浪力和箱体上的力矩。数值分析表明，最大水平波浪力、最大垂直波浪力和最大力矩出现的所有频率都取决于上游箱体的垂荡运动，并且垂荡运动对这些频率的影响是不同的。此外，观察到这些频率偏离了相应的流体共振频率。此外，上游箱体的升沉运动减小了作用在箱体上的波浪力，改变了波浪力随入射波频率的变化趋势。
Wave forces on two side-by-side boxes in close proximity under wave actions were analyzed using the OpenFOAM package. The upstream box heaved freely under wave actions, whereas the downstream box remained fixed. For comparison, a configuration in which both boxes were fixed was also considered. The effects of the heave motion of the upstream box on the wave loads, including the horizontal wave forces, vertical wave forces, and moments on the boxes, were the focus of this study. Numerical analyses showed that all frequencies at which the maximum horizontal wave forces, maximum vertical wave forces, and maximum moment appeared are dependent on the heave motion of the upstream box and that the effects of the heave motion on these frequencies are different. Furthermore, these frequencies were observed to deviate from the corresponding fluid resonant frequency. Moreover, the heave motion of the upstream box reduced the wave forces acting on both boxes and altered the variation trends of the wave forces with the incident wave frequency.