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Sound radiation by a plane localized vortex

Sound radiation by a plane localized vortex Abstract A classical problem on small-scale fluctuations of the Rankine vortex in a compressible gas has been numerically simulated. Euler equations for a compressible gas have been solved by the CABARET method. Simulation results well predict the value of the eigenfrequency of the boundary fluctuations for the azimuthal harmonic n = 2 and almost coincide with the analytic solution. The value of the acoustic instability increment has been quantitatively predicted despite the fact that it is small and it has been revealed at a fluctuation number higher than 100. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acoustical Physics Springer Journals

Sound radiation by a plane localized vortex

Yakovlev, P. G.
Acoustical Physics , Volume 58 (4): 5 – Jul 1, 2012
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References (9)

Publisher
Springer Journals
Copyright
2012 Pleiades Publishing, Ltd.
ISSN
1063-7710
eISSN
1562-6865
DOI
10.1134/s1063771012040185
Publisher site
See Article on Publisher Site

Abstract

Abstract A classical problem on small-scale fluctuations of the Rankine vortex in a compressible gas has been numerically simulated. Euler equations for a compressible gas have been solved by the CABARET method. Simulation results well predict the value of the eigenfrequency of the boundary fluctuations for the azimuthal harmonic n = 2 and almost coincide with the analytic solution. The value of the acoustic instability increment has been quantitatively predicted despite the fact that it is small and it has been revealed at a fluctuation number higher than 100.

Journal

Acoustical Physics – Springer Journals

Published: Jul 1, 2012

Keywords: Acoustics

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