Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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A FEASIBILITY STUDY OF A NAVIER-STOKES FLOW SOLVER USING A KINETIC BGK SCHEME IN TRANSITIONAL REGIME

Kinetic BGK 기법을 이용한 Navier-Stokes 유동 해석자의 천이 영역 적용성 연구

  • Cho, M.W. (Department of Aerospace Engineering, School of Mechanical and Aerospace Engineering, KAIST) ;
  • Yang, T.H. (Department of Aerospace Engineering, School of Mechanical and Aerospace Engineering, KAIST) ;
  • Kwon, O.J. (Department of Aerospace Engineering, School of Mechanical and Aerospace Engineering, KAIST)
  • 조민우 (한국과학기술원 기계항공공학부 항공우주공학과) ;
  • 양태호 (한국과학기술원 기계항공공학부 항공우주공학과) ;
  • 권오준 (한국과학기술원 기계항공공학부 항공우주공학과)
  • Received : 2015.08.17
  • Accepted : 2015.09.21
  • Published : 2015.09.30
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Abstract

In the present study, a flow solver using a kinetic BGK scheme was developed for the compressible Navier-Stokes equation. The kinetic BGK scheme was used to simulate flow field from the continuum up to the transitional regime, because the kinetic BGK scheme can take into account the statistical properties of the gas particles in a non-equilibrium state. Various numerical simulations were conducted by the present flow solver. The laminar flow around flat plate and the hypersonic flow around hollow cylinder of flare shape in the continuum regime were numerically simulated. The numerical results showed that the flow solver using the kinetic BGK scheme can obtain accurate and robust numerical solutions. Also, the present flow solver was applied to the hypersonic flow problems around circular cylinder in the transitional regime and the results were validated against available numerical results of other researchers. It was found that the kinetic BGK scheme can similarly predict a tendency of the flow variables in the transitional regime.

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References

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