Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Effects on Nonlinear Ship Motions on Ship Maneuvering in Large Amplitude Waves

비선형 선박운동을 고려한 대파고 파랑 중 조종성능에 대한 연구

  • Seo, Min-Guk (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Kim, Yong-Hwan (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Kim, Kyong-Hwan (Department of Naval Architecture and Ocean Engineering, Seoul National University)
  • 서민국 (서울대학교 조선해양공학과) ;
  • 김용환 (서울대학교 조선해양공학과) ;
  • 김경환 (서울대학교 조선해양공학과)
  • Received : 2011.08.11
  • Accepted : 2011.10.17
  • Published : 2011.12.20
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Abstract

This paper considers a numerical analysis of ship maneuvering performance in the high amplitude incident waves by adopting linear and nonlinear ship motion analysis. A time-domain ship motion program is developed to solve the wave-body interaction problem with the ship slip speed and rotation, and it is coupled with a modular type 4-DOF maneuvering problem. Nonlinear Froude-Krylov and restoring forces are included to consider weakly nonlinear ship motion. The developed method is applied to observe the nonlinear ship motion and planar trajectories in maneuvering test in the presence of incident waves. The comparisons are made for S-175 containership with existing experimental data. The nonlinear computation results show a fair agreement of overall tendency in maneuvering performance. In addition, maneuvering performances with respect to wave slope is predicted and reasonable results are observed.

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References

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