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Study on Ship Performance in a Seaway for Application to Early Stage of Hull-Form Design

선박의 파랑 중 운항성능을 고려한 초기 선형설계에 대한 연구

  • Jung, Yoo-Won (Department of Naval Architecture & Ocean Engineering, Seoul National University) ;
  • Kim, Yonghwan (Department of Naval Architecture & Ocean Engineering, Seoul National University) ;
  • Park, Dong-Min (Department of Naval Architecture & Ocean Engineering, Seoul National University)
  • 정유원 (서울대학교 조선해양공학과) ;
  • 김용환 (서울대학교 조선해양공학과) ;
  • 박동민 (서울대학교 조선해양공학과)
  • Received : 2016.08.24
  • Accepted : 2017.03.30
  • Published : 2017.06.20

Abstract

This paper introduces a study on ship performance in waves to consider the effects of added resistance in the early stage of hull-form design. A ship experiences a loss of speed in actual seaways, hence this study proposes the overall procedure of a new design concept that takes into account the hydrodynamic performance of ship in waves. In the procedure, the added resistance is predicted using numerical methods: slender-body theory and Maruo's far-field formulation, since these methods are efficient in initial design stage, and an empirical formula is adopted for short waves. As computational models, KVLCC2 hull and Supramax bulk carrier are considered, and the results of added resistance and weather factor for test models are discussed. The computational results of vertical motion response and added resistance of KVLCC2 hull are compared with the experimental data. In addition, the sensitivity analysis of added resistance and weather factor for KVLCC2 hull to the variations of ship dimensions are conducted, and the change of the added resistance and propulsion factors after hull form variations are discussed.

Keywords

References

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