Wave dynamics around a floating circular flexible plate over a permeable bed

IF 1.3 4区工程技术 Q3 ENGINEERING, MECHANICAL

Journal of Offshore Mechanics and Arctic Engineering-Transactions of the Asme Pub Date : 2023-09-22 DOI:10.1115/1.4063492

Gayathri R., Chia-Cheng Tsai, Harekrushna Behera

引用次数: 0

Abstract

Abstract In this paper, to determine the efficacy of the porous bed on damping far-field wave energy the wave dynamics around a circular plate is studied. By combining the appropriate boundary conditions, the unknown potential is attained for the free surface and the plate-covered region. The Bessel series solution is attained further, by employing the matched eigenfunction expansion technique. Wave force excitation on the circular plate, deflection of the plate, and flow distribution is calculated and examined to comprehend the efficacy of the current investigation. Moreover, the motion of the plate is assessed in the time domain. The study reveals a substantial reduction in wave amplitude on the plate's leeward side because of the energy dissipation by the porous bed. Also the study concludes that for intermediate values of porosity with larger wavenumbers, approximately 50% of wave power is dissipated with respect to incident wave power.

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可渗透河床上浮动的圆形柔性板周围的波动动力学

摘要为了确定多孔床对远场波能的阻尼效果，本文研究了圆板周围的波动力学。通过结合适当的边界条件，获得了自由表面和板覆盖区域的未知势。采用匹配特征函数展开技术，进一步得到贝塞尔级数解。计算并检验了波浪力在圆板上的激励、板的挠度和流动分布，以了解当前研究的有效性。此外，在时域上对板块的运动进行了评估。研究表明，由于多孔层的能量耗散，在板的背风面波浪振幅有很大的减小。研究还得出结论，对于具有较大波数的孔隙度的中间值，相对于入射波能，大约50%的波能被耗散。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Offshore Mechanics and Arctic Engineering-Transactions of the Asme 工程技术-工程：大洋

CiteScore

4.20

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： The Journal of Offshore Mechanics and Arctic Engineering is an international resource for original peer-reviewed research that advances the state of knowledge on all aspects of analysis, design, and technology development in ocean, offshore, arctic, and related fields. Its main goals are to provide a forum for timely and in-depth exchanges of scientific and technical information among researchers and engineers. It emphasizes fundamental research and development studies as well as review articles that offer either retrospective perspectives on well-established topics or exposures to innovative or novel developments. Case histories are not encouraged. The journal also documents significant developments in related fields and major accomplishments of renowned scientists by programming themed issues to record such events. Scope: Offshore Mechanics, Drilling Technology, Fixed and Floating Production Systems; Ocean Engineering, Hydrodynamics, and Ship Motions; Ocean Climate Statistics, Storms, Extremes, and Hurricanes; Structural Mechanics; Safety, Reliability, Risk Assessment, and Uncertainty Quantification; Riser Mechanics, Cable and Mooring Dynamics, Pipeline and Subsea Technology; Materials Engineering, Fatigue, Fracture, Welding Technology, Non-destructive Testing, Inspection Technologies, Corrosion Protection and Control; Fluid-structure Interaction, Computational Fluid Dynamics, Flow and Vortex-Induced Vibrations; Marine and Offshore Geotechnics, Soil Mechanics, Soil-pipeline Interaction; Ocean Renewable Energy; Ocean Space Utilization and Aquaculture Engineering; Petroleum Technology; Polar and Arctic Science and Technology, Ice Mechanics, Arctic Drilling and Exploration, Arctic Structures, Ice-structure and Ship Interaction, Permafrost Engineering, Arctic and Thermal Design.