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J. Ocean Eng. Technol. 2009;23(3):6-13.    

Analysis on Motion Responses and Transmission Coefficients of a Moored Floating Breakwater in Oblique Incident Waves
Cho Il-Hyoung,Pyo Sang-Woo
Department of Ocean System Engineering Jeju National University,Realweb Corp.
경사 입사파중 계류된 부유식 방파제의 운동응답과 투과율 해석
조일형,표상우
제주대학교 해양시스템공학과,(주)리얼웹
© 2009 The Korean Society of Ocean Engineers     Open access / Under a Creative Commons License
Keywords: Boundary element method, Floating breakwater, Transmission coefficient, Added mass, Damping coefficient, Mooring system
핵심용어: 경계요소법, 부유식 방파제, 투과율, 부가질량, 감쇠계수, 계류시스템
Abstract
Based on the boundary element method, the motion responses and transmission coefficients of a moored floating breakwater were investigated in oblique waves. To satisfy the outgoing radiation condition in the far field, the fluid domain was divided into inner and outer regions. The complete solution could be obtained by applying the matching conditions between the eigenfunction-based outer solution and BEM-based inner solution. Using the developed predictive tools, the wave exciting forces, added mass, damping coefficients, motion responses, and transmission coefficients were assessed for various combinations of breakwater configuration, wave heading, mooring cables properties, and wave characteristics. It was found that the transmission coefficient for a moored floating breakwater was closely dependent on the motion responses, which were greatly amplified at the resonant frequencies.


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