Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Turbulent Flow Simulations on 2-Dimensional Ground Effect Part II. Study on the Effects of Ground Boundary Conditions

2차원 지면효과에 대한 난류 유동장 해석 Part II. 지면경계 조건의 영향에 대한 연구

  • 김윤식 (한국해양연구원 해양시스템안전연구소) ;
  • 이재은 (한국과학기술원 항공우주공학전공 대학원) ;
  • 김유진 (한국과학기술원 항공우주공학전공 대학원) ;
  • 권장혁 (한국과학기술원 항공우주공학 전공)
  • Published : 2007.08.31
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Abstract

A comparative study on ground boundary conditions for the airfoil in ground effect has been carried out. The objective of the present study is to clarify effects of the ground boundary conditions so that it will be helpful to analyse results of wind tunnel tests using the fixed ground board or the image method. A low Mach number preconditioned Navier-Stokes solver using the overlap grid method has been applied. It has been turned out that results with the symmetric boundary condition are almost the same to those with the moving boundary condition. Results with the fixed ground boundary show discrepancy to those with the moving boundary condition when flow separation on the ground board takes place.

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References

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