Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
권호 표지
DOI QR코드

DOI QR Code

Numerical Study of Shear-Enhanced Turbulent Diffusion

전단 증진된 난류확산의 수치적 연구

  • 이창훈 (연세대학교 기계전자공학부) ;
  • 최재호 (서울시립대학교 대학원)
  • Published : 2001.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study is to investigate the effect of shear on turbulent diffusion. Turbulent Couette flows at low Reynolds number are numerically simulated using a Lagrangian PDF method. Flow field and particle trajectories are computed and analyzed in detail. Statistics for particle dispersion obtained from numerical simulations is compared with the classical scaling relations for dispersion in a shear flow.

Keywords

References

  1. Pope, S. B., 1985, 'PDF Methods for Turbulent Reactive Flows,' Progress in Energy and Combustion Science, Vol. 11, pp. 119-192 https://doi.org/10.1016/0360-1285(85)90002-4
  2. Pope, S. B., 1994, 'Lagrangian PDF Methods for Turbulent Flows,' Annual Review of Fluid Mechanics, Vol. 26, pp. 23-63 https://doi.org/10.1146/annurev.fl.26.010194.000323
  3. Dreeben, T. D. and Pope, S. B., 1997, 'Probability Density Function and Reynolds-Stress Modeling of Near-Wall Tyrbulent Flow,' Physics of Fluids, Vol. 9, No. 1, pp. 154-163 https://doi.org/10.1063/1.869157
  4. Lee, C., Kim, B., Kim, N., 2000, 'A Simple Lagrangian PDF Model for Wall-Bounded Turbulent Flows,' KSME International Journal, Vol. 14, No. 8, pp. 900-911
  5. Shen, P. and Ywung, P. K., 1997, 'Fluid Particle Dispersion in Homogeneous Turbulent Shear Flow,' Physics of Fluids, Vol. 9, No. 11, pp. 3472-3484 https://doi.org/10.1063/1.869456
  6. Squires, K. D. and Eaton, J. K., 1991, 'Lagrangian and Eulerian Statistics obtained from Direct Numerical Simulations of Homogeneous Turbulence,' Physics of Fluids, Vol. 3, No. 1, pp. 130-143 https://doi.org/10.1063/1.857872
  7. Monin, A. S. and Yaglom, A. M., 1971, Statistical Fluid Mechanics, Vol. I, p. 558