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On the appearance of a system of ring vortices in the mixing layer of axially symmetric turbulent jets under acoustic action

  • Atmospheric and Aeroacoustics
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Abstract

The shadow visualization method is applied to study the process of loss of stability of the mixing layer of a subsonic axially symmetric turbulent jet under longitudinal internal action of saw-tooth sound waves of finite amplitude. Such action leads to the formation of a system of ring vortices in the mixing layer at the frequency of its intrinsic instability. The interaction of the vortices can be accompanied by sound emission. A similar phenomenon is also observed in turbulent jets for small supercritical pressure fluctuations on a nozzle.

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Authors and Affiliations

  1. Central Aerohydrodynamic Institute, ul. Radio 17, Moscow, 105005, Russia

    V. G. Pimshtein

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  1. V. G. Pimshtein
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Correspondence to V. G. Pimshtein.

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Original Russian Text © V.G. Pimshtein, 2016, published in Akusticheskii Zhurnal, 2016, Vol. 62, No. 4, pp. 489–492.

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Pimshtein, V.G. On the appearance of a system of ring vortices in the mixing layer of axially symmetric turbulent jets under acoustic action. Acoust. Phys. 62, 491–494 (2016). https://doi.org/10.1134/S106377101604014X

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  • DOI: https://doi.org/10.1134/S106377101604014X

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