Numerical Simulation of Locally-Forced Turbulent Boundary Layer

- Journal title : Transactions of the Korean Society of Mechanical Engineers B
- Volume 25, Issue 1, 2001, pp.96-107
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.22634/KSME-B.2001.25.1.96

Title & Authors

Numerical Simulation of Locally-Forced Turbulent Boundary Layer

Ri, Gwang-Hun; Seong, Hyeong-Jin;

Ri, Gwang-Hun; Seong, Hyeong-Jin;

Abstract

An unsteady numerical simulation was performed to analyze flow structures behind a local suction/blowing in a flat-plate turbulent boundary layer. The local forcing was given to the boundary layer flow by means of sinusoidally oscillating jet. A version of the unsteady --f(sub)u model (Rhee and Sung 2000) was employed. The Reynolds number based on the momentum thickness was about Re(sub)=1700. The forcing frequency was varied in the range 0.011f(sup)+0.044 with a fixed forcing amplitude A(sub)o=0.4. The predicted results were compared and validated with the experimental data. It was shown that the unsteady locally-forced boundary layer flow is predicted well by the --f(sub)u model. The effect of the pitch angle of local forcing on the reduction of skin friction was also examined.

Keywords

Low-Reynolds-Number Turbulence Model;Turbulent Boundary Layer Flow;Local Forcing;Vortex Merging;

Language

Korean

References

1.

Schlichting, H., 1979, Boundary Layer Theory, 7th Ed., McGraw-Hill

2.

Koga, D.J., 1983, Control of Separated and Reattaching Flow Fields Wsing Forced Unsteadiness, Ph.D. thesis, Illinois Institute of Technology

3.

Park, J. and Choi, H., 1999, 'Effect of Uniform Blowing or Suction from a Spanwise Slot on a Turbulent Boundary Layer Flow', Phys. Fluids, Vol.11, No.10, pp.3095-3105

4.

Choi, H., Moin, P. and Kim, J., 1993, 'Direct Numerical Simulation of turbulent flow over riblets', J. Fluid Mech., Vol.255, pp.503-539

5.

Orlandi, P., 1997, 'Drag Reduction in Turbulent MHD Pie Flow', 11th Symp. on the Turbulent Shear Flows

6.

Jung, W.J., Mangiavacci, N. and Akhavan, R., 1992, 'Suppression of Turbulence in Wall-bounded Flows by High-frequency Spanwise Oscillations', Phys. Fluids, Vol. 4, No. 8, pp.1605-1607

7.

Chung, Y.M., Sung, H.J. and Boiko, A.V., 1997, 'Spatial Simulation of the Instability of Channel Flow with Local Suction/Blowing', Phys. Fluids, Vol. 9, No. 11, pp.3258-3266, 1997

8.

Tardu, S., 1998, 'Near Wall Turbulence Control by Local Time Periodical Blowing', Experimental Thermal and Fluid Science, Vol.16, pp.41-53

9.

Sano, M. and Hirayama, N., 1985, 'Turbulent Boundary Layers with Injection and Suction through a Slit', Bulletin of JSME, Vol. 28, No. 239, pp.807-814

10.

Antonia, R.A., Zhu, Y. and Sokolov, M., 1995, 'Effect of Concentrated Wall Suction on a Turbulent Boundary Layer', Phys. Fluids, Vol. 7, No. 10, pp.2465-2474

11.

Park, S.H., Lee, I. and Sung, H.J., 2000, 'Effect of Local Forcing from a Spanwise Slot on a Turbulent Boundary Layer', Exp. Fluids, submitted

12.

Park, T.S. and Sung, H.J.,1997, 'A New Low-Reynolds-Number $k-{\varepsilon}-f_{\mu}$ Model for Predictions Involving Multiple Surface', Fluid Dynamic Research, Vol.20, pp.97-113

13.

Hadzic, I., Hanjalic, K., 1993, 'On the Evalution of Turbulence Field in a Periodic Flow in a Finite Length Pipe', 9th Symp. on Turbulent Shear Flows, pp.21-13-18

14.

Rhee, G. H. and Sung, H. J., 2000, 'Numerical Prediction of Locally-forced Turbulent Separated and Reattaching Flow', Fluid Dynamics Research, Vol.26, Issue 6, pp.421-436

15.

Lee, M. J., Kim, J. and Moin, P., 1990, 'Structure of Turbulence at High Shear Rate', J. Fluid Mech., Vol.216, pp.561-583

16.

Durbin, P. A. and Laurence, D., 1996 'Nonlocal Effect in Single Point Closure', 3rd Advances in Turbuelence Research Coference, Korea Univ., Korea, pp.109-120

17.

리광훈, 성형진, 2000, '난류박리 및 재 부착유동에 대한 저레이놀즈수 비선형 열전달 모형의 개발', 대한기계학회논문집 B권, 제24권, 제2호, pp.316-323

18.

Rhee, G. H. and Sung.H. J., 2000, 'Generation of Inflow Conditions in a Reynolds Averaged Navier-Stokes closure', AIAA J., Vol. 38, No. 3, pp.545-547