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Numerical analysis and validation of weakly nonlinear ship motions and structural loads on a modern containership

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Authors
Song, Myung-Jae; Kim, Kyong-Hwan; Kim, Yonghwan
Issue Date
2011-01
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
OCEAN ENGINEERING; Vol.38 1; 77-87
Keywords
Seakeeping analysisWeakly nonlinear analysisTime-domain approachNonlinear ship structural loadsRankine panel method
Abstract
This paper aims to validate a numerical seakeeping code based on a 3D Rankine panel method by comparing its results with experimental data. Particularly, the motion response and hull-girder loads on a real modern ship, a 6500 TEU containership, are considered in this validation study. The method of solution is a 3D Rankine panel method which adopts B-spline basis function in the time domain. The numerical code is based on the weakly nonlinear scheme which considers nonlinear Froude-Krylov and restoring forces. The main focus of this study is given to investigate the nonlinear characteristics of wave-induced loads, and to validate this present scheme for industrial use in the range of low Froude number. The comparisons show that the nonlinear motions and hull-girder loads, computed by the present numerical code, have good overall agreements with experimental results. It is found that, for the better accuracy of computational results, particularly at extreme waves in oblique seas, the careful treatment of soft-spring (or compatible) system is recommended to the control of non-restoring motions such as surge, sway, and yaw. (C) 2010 Elsevier Ltd. All rights reserved.
ISSN
0029-8018
Language
English
URI
http://hdl.handle.net/10371/75066
DOI
https://doi.org/10.1016/j.oceaneng.2010.09.017
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Architecture and Architectural Engineering (건축학과)Journal Papers (저널논문_건축학과)
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