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Numerical Analysis of Tip Vortex Flow of Three-dimensional Hydrofoil using B-Spline Higher-order Boundary Element Method

B-Spline 고차 경계요소법을 이용한 3차원 수중익의 날개 끝 와류유동 수치해석

  • Kim, Ji-Hye (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Ahn, Byoung-Kwon (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Kim, Gun-Do (Korea Research Institute of Ships and Ocean(KRISO)) ;
  • Lee, Chang-Sup (Korea Research Institute of Ships and Ocean(KRISO))
  • 김지혜 (충남대학교 선박해양공학과) ;
  • 안병권 (충남대학교 선박해양공학과) ;
  • 김건도 (한국해양연구원 선박해양플랜트연구소) ;
  • 이창섭 (한국해양연구원 선박해양플랜트연구소)
  • Received : 2017.04.07
  • Accepted : 2017.06.16
  • Published : 2017.06.30

Abstract

A three-dimensional higher order boundary element method based on the B-spline is presented. The method accurately models piecewise continuous bodies and induced velocity potentials using B-spline tensor product representations, and it is capable of obtaining accurate pointwise values for the potential and its derivatives, especially in the trailing edge and tip region of the lift generating body, which may be difficult or impossible to evaluate with constant panel methods. In addition, we implement a wake roll-up and examine the tip vortex formation in the near wake region. The results are compared with existing numerical results and the results of experiments performed out at the cavitation tunnel of Chungnam National University.

Keywords

Acknowledgement

Supported by : 산업통상자원부

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