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原文传递 Near Trapped Modes in Long Array of Truncated Circular Cylinders

题名：	Near Trapped Modes in Long Array of Truncated Circular Cylinders
正文语种：	英文
作者：	Ioannis K. Chatjigeorgiou1; Konstantinos Chatziioannou2; Thomas Mazarakos3
作者单位：	1Professor, School of Naval Architecture and Marine Engineering, National Technical Univ. of Athens, 9 Hero?n Polytechniou Ave., Zografos Campus, Athens 15773, Greece (corresponding author). 2Ph.D. Candidate, Dept. of Civil Engineering, Univ. of Thessaly, Volos 38334, Greece. 3Postdoctoral Research Fellow, School of Naval Architecture and Marine Engineering, National Technical Univ. of Athens, 9 Heroon Polytechniou Ave., Zografos Campus, Athens 15773, Greece.
关键词：	Wave trapping; Truncated cylinders; Neumann trapped mode; Dirichlet trapped mode; Near trapped mode
摘要：	The purpose of this article is to investigate near trapped-mode occurrences by arrays of truncated cylinders. The basic question that this article tries to answer is whether near trapped modes (peak loading wave numbers) are indeed stimulated for arrays of truncated cylinders, such as in arrays of bottom-seated cylinders. Arrays of truncated cylinders are conceived as possible wave-energy-extraction mechanisms given that their modules are allowed to oscillate in surge (or sway) and heave, in contrast to bottom-seated cylinders, which are fixed. Hence, an additional question that should be answered is which actual mode of motion is important. To tackle these tasks, the governing hydrodynamic diffraction problem is considered. Different velocity potentials are defined for the liquid regions formed by the geometry of the truncated cylinders. The sought ultimate solution is achieved using the eigenfunction expansion technique combined with the direct approach, which, in contrast to the multiple-scattering method, is unquestionably more efficient and robust.
出版年：	2019
期刊名称：	Journal of Waterway, Port, Coastal, and Ocean Engineering
卷：	145
期：	1
页码：	1-18