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Observed and Computed Waves of Aerodynamic Sound

  • T. Kambe
Conference paper
Part of the ICASE/NASA LaRC Series book series (ICASE/NASA)

Abstract

Evidences are accumulating to show that the theory of vortex sound in the aeroacoustics can describe characteristic features of the waves radiated by a localized vortex motion at low Mach numbers. Examples are given for collisions of two vortex rings and interaction of a vortex ring with a cylinder. An unresolved problem in our study so far is whether there exists a monpolar (i.e. isotropic) component in the radiated waves which can be attributed to the viscous dissipation of kinetic energy. A discussion is given about implication of the octapole component observed in the experiment of oblique collision of two vortex rings.

Keywords

Acoustic Emission Acoustic Wave Vortex Ring Acoustic Pressure Vortex Center 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Curie, N., 1955. “The influence of solid boundaries upon aerodynamic sound,” Proc. Roy. Soc. London A 231, pp. 505–514.ADSCrossRefGoogle Scholar
  2. Dyson, F. W., 1983. “The potential of an anchor ring, Part II,” Philos. Trans. Roy. Soc. London A 184, pp. 1041–1106.ADSCrossRefGoogle Scholar
  3. Kambe, T., 1984. “Influence of viscosity on aerodynamic sound emission in free space,” J. Sound Vibration 95, pp. 351–360.ADSMATHCrossRefGoogle Scholar
  4. Kambe, T., 1986. “Acoustic emissions by vortex motions,” J. Fluid Mech. 173, pp. 643–666.ADSMATHCrossRefGoogle Scholar
  5. Kambe, T. and Minota, T., 1981. “Sound radiation from vortex systems,” J. Sound Vibration 74, pp. 61–72.ADSMATHCrossRefGoogle Scholar
  6. Kambe, T. and Minota, T., 1983. “Acoustic wave radiated by head-on collision of two vortex rings,” Proc. Roy. Soc. London A 386, pp. 277–308.ADSCrossRefGoogle Scholar
  7. Kambe, T., Minota, T., and Ikushima, Y., 1985. “Acoustic wave emitted by a vortex ring passing near the edge of a half-plane,” J. Fluid Mech. 155, pp. 77–103.ADSMATHCrossRefGoogle Scholar
  8. Kambe, T., Minota, T., Murakami, T., and Takaoka, M., 1990. “Oblique collision of two vortex rings and its acoustic emission,” in Topological Fluid Mechanics (eds: H. K. Moffatt and A. Tsinober, Cambridge University Press), pp. 515–524.Google Scholar
  9. Kida, S., Takaoka, M., and Hussain, F., 1989. “Reconnection of two vortex rings,” Phys. Fluids A1, pp. 630–632ADSGoogle Scholar
  10. Kida, S., Takaoka, M., and Hussain, F., 1991, “Collision of two vortex rings,” J. Fluid Mech. 230, pp. 583–646.MathSciNetADSMATHCrossRefGoogle Scholar
  11. Minota, T. and Kambe, T., 1986. “Observation of acoustic emission from head-on collision of two vortex rings,” J. Sound Vibration 111, pp. 51–59.CrossRefGoogle Scholar
  12. Minota, T. and Kambe, T., 1987. “Acoustic waves emitted by a vortex ring passing near a circular cylinder,” J. Sound Vibration 119, pp. 509–528.ADSCrossRefGoogle Scholar
  13. Minota, T., Kambe, T., and Murakami, T., 1988a. “Acoustic emission from interaction of a vortex ring with a sphere,” Fluid Dyn. Res. 3, pp. 357–362.ADSCrossRefGoogle Scholar
  14. Minota, T., Murakami, T., and Kambe, T., 1988b. “Acoustic waves emitted by a vortex ring passing near a wedge-like plate,” Fluid Dyn. Res. 4, pp. 57–71.ADSCrossRefGoogle Scholar
  15. Möhring, W., 1978. “On vortex sound at low Mach number,” J. Fluid Mech. 85, pp. 685–691.MathSciNetADSMATHCrossRefGoogle Scholar
  16. Müller, E.-A. and Obermeier, F., 1988. “Vortex sound,” Fluid Dyn. Res. 3, pp. 43–51.ADSCrossRefGoogle Scholar
  17. Obermeier, F., 1980. “The influence of solid bodies in low Mach number vortex flow,” J. Sound Vibration 72, pp. 39–47.ADSMATHCrossRefGoogle Scholar
  18. Shariff, K., Leonard, A., and Ferziger, J. H., 1989. “Dynamics of a class of vortex rings,” NASA Tech. Mem. 102257.Google Scholar

Copyright information

© Springer-Verlag New York Inc. 1993

Authors and Affiliations

  • T. Kambe
    • 1
  1. 1.Department of PhysicsUniversity of TokyoHongo, Bunkyo-ku, Tokyo 113Japan

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