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A Study on the Resistance Performance and Flow Pattern of High Speed Planing Hull using CFD

전산유체계산을 통한 고속 활주선의 저항성능 및 유동분포 해석

  • Park, Kyurin (Korea Research Institute of Ships & Ocean engineering) ;
  • Kim, Dong Jin (Korea Research Institute of Ships & Ocean engineering) ;
  • Kim, Sun Young (Korea Research Institute of Ships & Ocean engineering) ;
  • Rhee, Shin Hyung (Department of Naval Architecture and Ocean Engineering, Seoul National University)
  • 박규린 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김동진 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김선영 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 이신형 (서울대학교 조선해양공학과)
  • Received : 2018.09.20
  • Accepted : 2018.10.15
  • Published : 2019.02.20

Abstract

Unmanned Surface Vehicle (USV) is being developed to do maritime survey and maritime surveillance at Korea Research Institute of Ships & Ocean engineering (KRISO). The goal is that USV should be operated at the maximum speed of 45 knots and it should be operated at sea state 4. Therefore the planing hull of USV should be excellent in resistance performance and manoeuvring performance. It is needed to check its performance using Experimental Fluid Dynamics (EFD), Computational Fluid Dynamics (CFD) or analytic method before designing the hull. In this study, resistance performance was analyzed by EFD and CFD. EFD with heave and pitch was performed at high speed towing system in Seoul National University. CFD was performed using SNUFOAM based on openFOAM with dynamic mesh to calculate running attitudes. The results of CFD were compared with EFD results. The results of CFD were resistance, running attitudes and wave height. The flow distribution and pressure distribution were also analyzed. The results of numerical resistance was under estimated than EFD. Even though the results of CFD have a slight limitation, it can be successfully used to estimate the resistance performance of planing hull. In addition it can be used as a supplement for EFD results.

Keywords

References

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