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

The Society of Naval Architects of Korea (대한조선학회)
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Numerical Analysis on Hydrodynamic Forces Acting on Side-by-Side Arranged Two-Dimensional Floating Bodies in Viscous Flows

점성유동장에 병렬배치된 2차원 부유체에 작용하는 유체력에 관한 수치해석

  • Heo, Jae-Kyung (Department of naval architecture and ocean engineering, Pusan National University) ;
  • Park, Jong-Chun (Department of naval architecture and ocean engineering, Pusan National University)
  • 허재경 (부산대학교 조선해양공학과) ;
  • 박종천 (부산대학교 조선해양공학과)
  • Received : 2012.09.11
  • Accepted : 2012.10.05
  • Published : 2012.10.20
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Abstract

Viscous flow fields of side-by-side arranged two-dimensional floating bodies are numerically simulated by a Navier-Stokes equation solver. Two identical bodies with a narrow gap are forced to heave and sway motions. Square and rounded bilge hull forms are compared to find out the effects of vortex shedding on damping force. Wave height, force RAOs, added mass and damping coefficients including non-diagonal cross coefficients are calculated and a similarity between the wave height and force RAOs is discussed. CFD which can take into account of viscous damping and vortex shedding shows better results than linear potential theory.

Keywords

References

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