Proceedings of the Korean Society of Marine Engineers Conference (한국마린엔지니어링학회:학술대회논문집)

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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The Flow Analysis of Past Flow a Circular Cylinder By Direct Numerical Simulation

DNS에 의한 원주후류에 대한 유동해석

  • ;
  • Mamoru TANAHASHI (Tokyo Institute of Technology Mechano-Aerospace Engineering) ;
  • Toshio MIYAUCHI (Tokyo Institute of Technology Mechano-Aerospace Engineering) ;
  • ;
  • 강신정 (한국해양대 대학원) ;
  • ;
  • ;
  • 김유택 (한국해양대 기관시스템 공학부) ;
  • 이영호 (한국해양대 기계.정보공학부)
  • Published : 2001.05.01
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Abstract

Laminar two-dimensional time-dependent flow past a circular cylinder is numerically investigated using direct numerical simulation for the low Reynolds number (Re=164∼280). The higher-order finite difference scheme is employed for the spatial distributions along with the second order Adams-Bashforth and the first order backward-Euler time integration. The convection term is applied by the 7th order up wind scheme and the pressure and viscosity terms are applied by the 4th order central difference. The grid system makes use of the regular grid system and it is generated by an equation. The calculated results of drag coefficients, lift coefficients, pressure distributions, and vorticity contours and other information are compared with experimental and numerical ones. These results obtained by the present DNS show good agreement with the previous studies.

Keywords