Harmonic Analyses of Hydrodynamic Characteristics for Gap Resonance Between Fixed Box and Vertical Wall

HE Zhi-wei; GAO Jun-liang; CHEN Hong-zhou; ZANG Jun; LIU Qian; WANG Gang

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Harmonic Analyses of Hydrodynamic Characteristics for Gap Resonance Between Fixed Box and Vertical Wall

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Two marine structures arranged side by side with a narrow gap may suffer from violent free-surface resonance,which would cause green water on deck,dramatically raise hydrodynamic loads on structures and seriously threaten the operation safety.The CFD-based open-sourced software,OpenFOAM?,is employed to simulate the twodimensional fluid resonance inside a narrow gap between a fixed box and a vertical wall induced by regular waves with different wave heights.The topographies with various plane slopes are placed in front of the wall.The focus of this article is on the influences of the incident wave height and the topographic slope on the nonlinear characteristics of various hydrodynamic parameters(including the wave height in the gap,the vertical wave force,and the horizontal wave force on the box)during gap resonance.The ratios of their high-order to the corresponding 1 st-order components under different sets of the incident wave height and the topographic slope are analyzed.It is found that the relative importance of all the high-order components increases gradually with the incident wave height for all the three parameters.The topographic influence on them closely depends on the type of the parameters and the incident wave height.In addition,the occurrence of the 2 nd-order gap resonance phenomenon can cause the 2 nd-order wave height and horizontal force to be significantly larger than the corresponding 1 st-order components.

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来源
《中国海洋工程：英文版》 |2021年第5期|712-723|共12页
作者
HE Zhi-wei; GAO Jun-liang; CHEN Hong-zhou; ZANG Jun; LIU Qian; WANG Gang;
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作者单位

School of Naval Architecture and Ocean Engineering;

Jiangsu University of Science and Technology;

Zhenjiang 212100;

China;

School of Civil Engineering and Architecture;

Northeast Electric Power University;

Jilin 132012;

China;

Centre for Infrastructure;

Geotechnical and Water Engineering(IGWE);

Department of Architecture and Civil Engineering;

University of Bath;

BA27AY;

UK;

College of Harbour;

Coastal and Offshore Engineering;

Hohai University;

Nanjing 210098;

China;

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原文格式 PDF
正文语种 chi
中图分类流体力学;
关键词
gap resonance; harmonic analyses; resonant wave height; wave loads; OpenFOAM;

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Harmonic Analyses of Hydrodynamic Characteristics for Gap Resonance Between Fixed Box and Vertical Wall

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