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

The Society of Naval Architects of Korea (대한조선학회)
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Vortex Shedding Frequency for a 2D Hydrofoil with a Truncated Trailing Edge

뒷날이 잘린 2차원 수중익의 와도 흘림 주파수

  • Lee, Seung-Jae (Research Institute of Marine Systems Engineering, Seoul National University) ;
  • Lee, Jun-Hyeok (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Suh, Jung-Chun (Research Institute of Marine Systems Engineering, Seoul National University)
  • 이승재 (서울대학교 해양시스템공학연구소) ;
  • 이준혁 (서울대학교 조선해양공학과) ;
  • 서정천 (서울대학교 해양시스템공학연구소)
  • Received : 2014.05.07
  • Accepted : 2014.09.23
  • Published : 2014.12.20
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Abstract

Vortex shedding which is the dominant feature of body wakes and of direct relevance to practical engineering problems, has been intensively studied for flows past a circular cylinder. In contrast, vortex shedding from a hydrofoil trailing edge has been studied to much less extent despite numerous practical applications. The physics of the problem is still poorly understood. The present study deals with $K{\acute{a}}rm{\acute{a}}n$ vortex shedding from a truncated trailing-edge hydrofoil in relatively high Reynolds number flows. The objectives of this paper are twofold. First, we aim to simulate unsteady turbulent flows past a two dimensional hydrofoil through a hybrid particle-mesh method and penalization method. The vortex-in-cell (VIC) method offers a highly efficient particle-mesh algorithm that combines Lagrangian and Eulerian schemes, and the penalization method enables to enforce body boundary conditions by adding a penalty term to the momentum equation. The second purpose is to investigate shedding frequencies of vortices behind a NACA 0009 hydrofoil operating at a zero angle of attack.

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References

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