JOURNAL BROWSE
Search
Advanced SearchSearch Tips
The study of predictive performance of low Reynolds number turbulence model in the backward-facing step flow
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
The study of predictive performance of low Reynolds number turbulence model in the backward-facing step flow
Kim, Won-Gap; Choe, Yeong-Don;
  PDF(new window)
 Abstract
Incompressible flow over a backward-facing step is computed by low Reynolds number turbulence models in order to compare with direct simulation results. In this study, selected low Reynolds number 1st and 2nd (Algebraic Stress Model : ASM) moment closure turbulence models are adopted and compared with each other. Each turbulence model predicts different flow characteristics, different re-attachment point, velocity profiles and Reynolds stress distribution etc. Results by .kappa.-.epsilon. turbulence models indicate that predicted re-attachment lengths are shorter than those by standard model. Turbulent intensity and eddy viscosity by low Reynolds number .kappa.-.epsilon. models are still greater than DNS results. The results by algebraic stress model (ASM) are more reasonable than those by .kappa.-.epsilon. models. The convective scheme is QUICK (Quadratic Upstream Interpolation for Convective Kinematics) and SIMPLE algorithm is adopted. Reynolds number based on step height and inlet free stream velocity is 5100.
 Keywords
Backward-Facing Step Flow;1st(or 2nd) Moment Closure;Reynolds Stress;Convective Scheme;Re-attachment Point;
 Language
Korean
 Cited by
 References
1.
Ninth Symposium on Turbulent Shear Flows, 1993. pp.16-18

2.
Effects of Expansion Ratio on the Calculation of Parallel-Walled Backward-Facing Step Flows: Comparison of Four Models of Turbulence, 1983.

3.
Numerical heat Transfer, 1984. vol.7. pp.343-357

4.
Numerical heat Transfer, 1984. vol.7. pp.59-75

5.
AIAA journal, 1985. vol.23. 9, pp.1356-1361

6.
AIAA journal, 1985. vol.23. 2, pp.163-171

7.
J. Fluids Engr., 1987. vol.109. pp.424-428

8.
J. Applied Mathematics and Physics(ZAMP), 1988. vol.39. pp.13-27

9.
AIAA journal, 1992. vol.30. 5, pp.1314-1320

10.
AIAA journal, 1989. vol.27. 3, pp.340-344

11.
한국항공우주학회지, 1990. vol.8. 11, pp.3039-3045

12.
대한기계학회논문집, 1994. vol.18. 11, pp.34-42

13.
Fundamental Studies on Two-Equation Turbulent Mode for Numerical Predictions of Wall-bounded Shear Flow and Heat Transfer, 1988.

14.
저레이놀즈 수 난류모형 개발에 관한 연구, 1991.

15.
J. Fluids Engr., 1993. vol.115. pp.56-64

16.
Directions in Second-Moment Modelling of Near Wall Turbulence, 1991.

17.
J. Fluids Mech., 1988. vol.187. pp.61-98

18.
Comp. Meth. Appl. Mech. Engng., 1979. vol.19. pp.59-98