Hybrid RANS/LES Simulation of Subsonic Cavity Flow

Hybrid RANS/LES 방법을 이용한 이음속 공동 유동의 수치적 모사

  • 장경식 (한국과학기술원 한국우주공학과) ;
  • 박승오 (한국과학기술원 항공우주공학과) ;
  • 최석기 (한국과학기술원 항공우주공학과)
  • Published : 2004.06.01


A numerical simulation of an incompressible cavity flow is conducted using the hybrid turbulence model. The model adopted is a modified type of DES using k- ε two-equation model. Cavity geometry and flow condition are based on Cattafesta's experiment. Computational results are compared with the results of Cattafesta's experiment. The simulation successfully predicts the oscillatory features and the Strouhal number of the oscillation compares very favorably with that of the dominant mode of experimental data. Vorticity contours obtained from the simulation data are consistent with the smoke visualization of the Cattafesta's experiment. The coherent structures of cavity flow are also investigated using Q criterion.


  1. Chingwei M. Shieh and PhiliP J. Morris., 'Comparison of two and three dimensional turbulent cavity flows,' AIAA paper, 2001-0511
  2. Jnag, K. S., and Park, S. O., 'Simulation of flow-induced cavity resonance with turbulence models,' 5th ACFD, 2003
  3. Rossiter, J. E., 'Wind tunnel expehments on the flow over rectangular cavities at subsonic and transonic speeds,' Royal aircraft establishment, Aeronautical research council, R&M 3438, 1966
  4. Arunajatesan, S., and Sinha, N., 'Unified unsteady RANS-LES simulation of cavity flowfields,' AIAA paper, 2001-0516
  5. East, L. F., 'Aerodynamically induced resonance in rectangular cavities,' Joumal of Sound Vibration, Vol. 3., pp. 277-287, 1966
  6. Sinha, N., Dash, S. M., and Chidambaram, N., 'A perspective on the simulation of cavity aeroacoustics,' AIAA paper, 98-0286
  7. Nichols, R. H., and Nelson, C. C., 'Application of Hybrid RANS/LES Tubulence models,' AIAA paper, 2003-0083
  8. Medic, G, and Durbin, P. A., 'Toward improved prediction of hear transfer on turbine blades,' Joumal of Turbomachinary, Vol. 124, pp. 187-192, 2002
  9. Hunt, J. C. R., Wray, A. A., and Moin, P., 'Eddies stream and convergence zones in turbulent flows,' in Proceedings of the 1988 Summer Program(CTR, Stanford, CA, 1988), pp. 193-208
  10. Dudief, Y., and Delcayre, F., 'On coherent vortex identification in turbulence,' Joumal ofTurbulence, Vol. 1, 11, 2000
  11. Spalart, P. R., Jou, W. H., Strelets, M., and Allmaras, S. R., 'Comment on the feasibility of LES for wings, and a hybrid rans/les,' 1st AFOSR, 1997
  12. Kato, M., and Launder, B. E., 'Modeling flow induced oscillation in turbulent flow around a square cylinder,' ASME FED. Vol. 159, pp.189-199
  13. Cattafesta, L. N., 'Active control of flow induced cavity resonance,' AIAA paper, 97-1804
  14. Tam, C. K. W., and Block, P. J. W., 'On the tones and pressure oscillations induced by flow over rectangular cavities,' J. Fluid Mech., Vol. 89, part 2, pp. 373-399, 1978
  15. Strelets, M., Detached Eddy Simulation of Massively Separeted Flows,' AIAA paper, 2001-0879
  16. Bush, R. H., and Mani, M., A two-equationlarfe eedy stress model for high sub-gridshear,' AIAA paper, 2001-2561