Journal of Mechanical Science and Technology

, Volume 30, Issue 7, pp 3229–3241 | Cite as

Flow structure and flow-induced noise in an axisymmetric cavity with lids

Article
  • 90 Downloads

Abstract

Direct numerical simulations of incompressible turbulent flow through an axisymmetric cavity with or without lids were performed at Ret,in = 186 to examine the hydrodynamic effects of the lids on the flow-induced noise. The strength of the recirculation in the downstream region was weakened by the installation of the lids. Comparison of the acoustic sources of the Lighthill equation indicated that the lid in the downstream region attenuated the flow-induced noise substantially. Frequency spectra and spatio-temporal correlations of pressure fluctuations revealed the most energetic mode and the convective nature of the flow over the cavity. It was evident from a detailed investigation of the instantaneous flow fields that the introduction of lids into the cavity significantly weakened the interaction between the separated shear layer and the trailing edge of the cavity. The present results clearly showed that the installation of lids is an effective means of reducing flow-induced noise.

Keywords

Axisymmetric cavity Direct numerical simulation Flow-induced noise Vortex-corner interaction 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    J. E. Rossiter, Wind-tunnel experiments on the flow over rectangular cavities at subsonic and transonic speeds, Aeronautical Research Council Reports and Memoranda, 3438 (1964).Google Scholar
  2. [2]
    A. F. Charwat, J. N. Roos, F. C. Dewey and J. A. Hitz, An investigation of separated flows, Part 1. The pressure field, J. Aerospace Sci., 28 (1961) 457–470.CrossRefMATHGoogle Scholar
  3. [3]
    E. B. Plentovich, R. L. Stalling and M. B. Tracy, Experimental cavity pressure measurements at subsonic and transonic speeds, NASA TP, 3358 (1993).Google Scholar
  4. [4]
    K. Krishnamurty, Sound radiation from surface cutouts in high speed flow, Ph.D. Thesis, California Institute of Technology (1956).Google Scholar
  5. [5]
    V. Sarohia, Experimental investigation of oscillations in flows over shallow cavities, AIAA J., 15 (1977) 984–991.CrossRefGoogle Scholar
  6. [6]
    D. Rockwell and E. Naudascher, Review-self-sustaining oscillations of flow past cavities, Trans. ASME: J. Fluids Eng., 100 (1978) 152–165.Google Scholar
  7. [7]
    M. Gharib and A. Roshko, The effect of flow oscillations on cavity drag, J. Fluid Mech., 177 (1987) 501–530.CrossRefGoogle Scholar
  8. [8]
    J. C. F. Pereira and J. M. M. Sousa, Influence of impingement edge geometry on cavity flow oscillations, AIAA J., 32 (1994) 1737–1740.CrossRefGoogle Scholar
  9. [9]
    J. C. Lin and D. Rockwell, Organized oscillations of initially turbulent flow past a cavity, AIAA J., 39 (2001) 1139–1151.CrossRefGoogle Scholar
  10. [10]
    P. Oshkai, M. Geveci, D. Rockwell and M. Pollack, Imaging of acoustically coupled oscillations due to flow past a shallow cavity: Effect of cavity length scale, J. Fluid. Struct., 20 (2005) 277–308.CrossRefGoogle Scholar
  11. [11]
    W. Kang, S. B. Lee and H. J. Sung, Self-sustained oscillations of turbulent flows over an open cavity, Exp. Fluids., 45 (2008) 693–702.CrossRefGoogle Scholar
  12. [12]
    C. W. Rowley, T. Colonius and A. J. Basu, On selfsustained oscillations in two-dimensional compressible flow over rectangular cavities, J. Fluid Mech., 455 (2002) 315–346.MathSciNetCrossRefMATHGoogle Scholar
  13. [13]
    C. M. Shieh and P. J. Morris, Parallel numerical simulation of subsonic cavity noise, AIAA Paper (1999) 99–1891.Google Scholar
  14. [14]
    X. Gloerfelt, C. Bogey, C. Bailly and D. Juve, Aerodynamic noise induced by laminar and turbulent boundary layers over rectangular cavities, AIAA Paper (2002) 2002–2476.Google Scholar
  15. [15]
    J. C. F. Pereira and J. M. M. Sousa, Experimental and numerical investigation on flow oscillations in a rectangular cavity, Trans. ASME: J. Fluids Eng., 117 (1995) 68–74.Google Scholar
  16. [16]
    K. Chang, G. Constantinescu and S.-O. Park, Analysis of the flow and mass transfer processes for the incompressible flow past an open cavity with a laminar and a fully turbulent incoming boundary layer, J. Fluid Mech., 561 (2006) 113–145.CrossRefMATHGoogle Scholar
  17. [17]
    S. B. Lee, A. Seena and H. J. Sung, Self-sustained oscillations of turbulent flow in an open cavity, J. Aircraft, 47 (2010) 820–834.CrossRefGoogle Scholar
  18. [18]
    D. N. Heo and D. J. Lee, Numerical investigation of the cover-plates effects on the rectangular cavity flow, AIAA Paper (2001) 2001–2127.Google Scholar
  19. [19]
    M. L. Munjal, Acoustics of ducts and mufflers, Wiley-Interscience, New-York (1987).Google Scholar
  20. [20]
    R. Verzicco and P. Orlandi, A finite-difference scheme for three-dimensional incompressible flows in cylindrical coordinates, J. Comput. Phys., 123 (1996) 402–414.MathSciNetCrossRefMATHGoogle Scholar
  21. [21]
    K. Kim, S.-J. Baek and H. J. Sung, An implicit velocity decoupling procedure for the incompressible Navier-Stokes equations, Int. J. Numer. Meth. Fl., 38 (2002) 125–138.CrossRefMATHGoogle Scholar
  22. [22]
    J. G. M. Eggels, F. Unger, M. H. Weiss, J. Westerweel, R. J. Adrian, R. Friedrich and F. T. M. Nieuwstadt, Fully developed turbulent pipe flow: A comparison between direct numerical simulation and experiment, J. Fluid Mech., 268 (1994) 175–209.CrossRefGoogle Scholar
  23. [23]
    M. J. Lighthill, On sound generated aerodynamically: I. General theory, Proc. R. Soc. A: Mathematical Physical and Engineering Sciences, 211 (1952) 564–587.MathSciNetCrossRefMATHGoogle Scholar
  24. [24]
    J. Kim and H. J. Sung, Wall pressure fluctuations and flow induced noise in a turbulent boundary layer over a bump, J. Fluid Mech., 558 (2006) 79–102.CrossRefMATHGoogle Scholar
  25. [25]
    J. Jeong and F. Hussain, On the identification of a vortex, J. Fluid Mech., 285 (1995) 69–94.MathSciNetCrossRefMATHGoogle Scholar
  26. [26]
    K. Bremhorst, M. Brennan and K.-S. Yang, Comparison of DNS and Reynolds stress modelling of flow around a rotating cylinder, Journal of Mechanical Science and Technology, 28 (3) (2014) 945–951.CrossRefGoogle Scholar

Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Korea Atomic Energy Research InstituteDaejeonKorea
  2. 2.Department of Mechanical Engineering, KAISTDaejeonKorea

Personalised recommendations