Underwater Radiated Noise Analysis for Commercial Ship Using Power Flow Analysis

doi:2012.26.4.30

J. Ocean Eng. Technol. > Volume 26(4); 2012 > Article

J. Ocean Eng. Technol. 2012;26(4):30-36.
DOI: https://doi.org/10.5574/KSOE.2012.26.4.030

Kwon Hyun-Wung,Hong Suk-Youn,Song Jee-Hun

Department of Naval Architecture and Ocean Engineering Seoul National University,Department of Naval Architecture and Ocean Engineering Seoul National University,Department of Naval Architecture and Ocean Engineering Chonnam National University

파워흐름해석법을 이용한 상선의 수중방사소음해석

권현웅,홍석윤,송지훈

서울대학교 조선해양공학과,서울대학교 조선해양공학과,전남대학교 조선해양공학전공

Keywords: Power flow analysis, Commercial ship, Underwater radiated noise, Power flow finite element method, Power flow boundary element method

핵심용어: 파워흐름해석법, 상선, 수중방사소음, 파워흐름유한요소법, 파워흐름경계요소법

Abstract

Recently, the underwater radiated noises generated from large commercial ships have become a globally important issue. Countries with large ports and environmental protection organizations demand strict safety guidelines in relation to underwater radiated noise. In this paper, the coupled PFFE/PFBE method is used to investigate the vibration and underwater radiated noise of a commercial ship. PFFEM is employed to analyze the vibrational responses of the commercial ship, and PFBEM 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.