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Effects of Hull Form Variations on Resistance and Seakeeping Performance of Planing Hulls with and without Incoming Regular Waves

고속 활주선의 선형에 따른 저항 성능 및 규칙파 중 운동 성능 고찰

  • Kim, Dong Jin (Korea Research Institute of Ship and Ocean Engineering, Korea Institute of Ocean Science and Technology) ;
  • Kim, Sun Young (Korea Research Institute of Ship and Ocean Engineering, Korea Institute of Ocean Science and Technology) ;
  • Kim, Seong Hwan (Far East Ship Design and Engineering Co., Ltd.) ;
  • Seo, Jeong Hwa (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Rhee, Shin Hyung (Department of Naval Architecture and Ocean Engineering, Seoul National University)
  • 김동진 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김선영 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김성환 ((주)극동선박설계) ;
  • 서정화 (서울대학교 조선해양공학과) ;
  • 이신형 (서울대학교 조선해양공학과)
  • Received : 2014.02.19
  • Accepted : 2014.07.21
  • Published : 2014.10.20

Abstract

Planing hull forms have significant influences on those hydrodynamic performances in calm water and in waves. Therefore, the hydrodynamic performance of a planing vessel should be predicted by model tests or theoretical calculations, and be confirmed whether it shows the performance requirements at the design stage. In this study, four planing hull forms are designed with the goal of the improvement of resistance and seakeeping performance, and 1/6.5 scale model tests are carried out in Seoul National University towing tank. The effects of design parameters such as length-to-beam ratio, deadrise angle and forebody shape on the hydrodynamic performance are investigated, based on model test results. Running attitude and resistance of model ships in calm water are also estimated by empirical formulae proposed by Savitsky (1964; 2007; 2012), and compared with the model test results. It is shown that calm water performance of non-prismatic planing hulls can be predicted well by Savitsky (2012)'s formula which improves the original Savitsky(1964/2007)'s formula by taking into account the variations of deadrise angles, and the actual angles between the hull bottom and the free surface.

Keywords

References

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