Abstract
*Department of Naval Architecture and Ocean Engineering, Seoul National University, Seoul, Korea**Department of Naval Architecture and Ocean Engineering, Chonn am National University, Yeosu, KoreaKEY WORDS: Power flow analysis 파워흐름해석법, Commercial ship 상선, Underwater radiated noise 수중방사소음, Power flow finite element method 파워흐름유한요소법, Power flow boundary element method 파워흐름경계요소법ABSTRACT: Recently, the underwater radiated noises generated from large c ommercial ships have become a globally important issue. Countri es with large ports and environmental protection organizations dem and strict safety guidelines in relation to underwater radiated noise. In this paper, the coupled PFFE/PFBE method is used to investigate the vibrati on and underwater radiated noise of a commercial ship. PFFEM is employed to analyze the vibrational responses of the commercial ship, and P FBEM is applied to analyze the underwater radiation noise. The vibrational energy of the structure is treated as an acoustic intensity boundary condition of PFBEM to calculate the underwater radiation noise. Numerical simulations are presented for the commercial ship under various frequencies, and reliable results are obtained.교신저자 송지훈: 전라남도 여수시 미평로 386, 061-659-7156, jhs@chonnam.ac.kr
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