厚多孔床存在时重力波与压缩 VLFS 的相互作用

IF 2.5 3区 工程技术 Q2 MECHANICS European Journal of Mechanics B-fluids Pub Date : 2024-10-11 DOI:10.1016/j.euromechflu.2024.10.003
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引用次数: 0

摘要

本研究涉及厚多孔床面有限浮动弹性板对斜波的散射问题。研究建立了一个势流耦合薄弹性板模型,并将类似物理情景的波流模型框定为一个边界值问题(BVP)。采用半解析方法,通过改变不同的几何参数,按照数值和物理图解获得流体力学系数。在波浪相互作用之前,对色散根进行了彻底分析,并观察到一个临界频率,在该频率之上,群速度为负值。在这一范围内,由于海底孔隙率较高,反射系数最小,透射系数最大。在阻塞范围内,反射系数出现了不连续的模式,主要存在于高压缩的情况下。这项工作的发现对于海洋环境中的超大型浮动结构可能非常有价值,尤其是在相互作用主要受厚多孔海床影响的情况下。
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Gravity wave interaction with compressive VLFS in the presence of thick porous bed
The present study deals with the problem of oblique wave scattering by a finite floating elastic plate over a thick porous bed. A potential flow-coupled thin-elastic plate model has been developed, and the wave flow model resembling the physical scenario is framed into a boundary value problem (BVP). A semi-analytical method has been employed to obtain the hydrodynamic coefficients following the numerical and physical illustrations by varying different geometrical parameters. Prior to wave interaction, dispersive roots are thoroughly analyzed, and a critical frequency is observed above which the group velocity is negative. Within this range, minimum reflection and maximum transmission occur due to the high porosity of the seabed. A discontinuous pattern in the reflection coefficient is observed within the blocking range, which mainly exists for high compression. The findings of this work may be highly valuable for Very Large Floating Structures in marine settings, particularly in situations where interactions are primarily influenced by the thick porous beds.
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来源期刊
CiteScore
5.90
自引率
3.80%
发文量
127
审稿时长
58 days
期刊介绍: The European Journal of Mechanics - B/Fluids publishes papers in all fields of fluid mechanics. Although investigations in well-established areas are within the scope of the journal, recent developments and innovative ideas are particularly welcome. Theoretical, computational and experimental papers are equally welcome. Mathematical methods, be they deterministic or stochastic, analytical or numerical, will be accepted provided they serve to clarify some identifiable problems in fluid mechanics, and provided the significance of results is explained. Similarly, experimental papers must add physical insight in to the understanding of fluid mechanics.
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