Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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NUMERICAL DIFFUSION DECREASE OF FREE-SURFACE FLOW ANALYSIS USING SOURCE TERM IN VOLUME FRACTION TRANSPORT EQUATION

볼륨비 이송방정식의 소스항을 이용한 자유수면 유동 해석의 해 확산 감소

  • Park, Sunho (Dept. of Ocean Engineering, Korea Maritime and Ocean University) ;
  • Rhee, Shin Hyung (Dept. of Naval Architecture and Ocean Engineering, Seoul National University)
  • 박선호 (한국해양대학교 해양공학과) ;
  • 이신형 (서울대학교 조선해양공학과)
  • Received : 2013.08.02
  • Accepted : 2014.03.24
  • Published : 2014.03.31
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Abstract

Accurate simulation of free-surface wave flows around a ship is very important for better hull-form design. In this paper, a computational fluid dynamics (CFD) code, termed SNUFOAM, which is based on the open source libraries, OpenFOAM, was developed to predict the wave patterns around a ship. Additional anti-diffusion source term for minimizing a numerical diffusion, which was caused by convection differencing scheme, was considered in the volume-fraction transport equation. The influence of the anti-diffusion source term was tested by applying it to free-surface wave flow around the Wigley model ship. In results, the band width of the volume fraction contours between 0.1 to 0.9 at the hull surface was narrowed by considering the anti-diffusion term.

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References

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