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Pulsating gas flows in an annular nozzle

  • Mechanics
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Abstract

On the basis of the Navier–Stokes equations, the effect of various factors on the temporal development of initial perturbations caused by the start of an annular nozzle blown through with air is investigated parametrically for the laminar model of flow. For the first time, the flow modes at which the initial perturbations accompanying the nozzle start are not damped and pass to the quasi-periodic mode are found in calculations. The Fourier frequency spectrum of pressure pulsations in the center of the thrust wall and the value of the nozzle thrust are determined. The typical pulsating pressure signals obtained in calculations and detected in experiments are presented.

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Authors and Affiliations

  1. Research Institute of Mechanics, Moscow State University, Moscow, 117192, Russia

    V. A. Levin, N. E. Afonina, V. G. Gromov, I. S. Manuylovich, V. V. Markov, G. D. Smekhov & A. N. Khmelevsky

  2. Institute of Automation and Control Processes, Far East Branch, Russian Academy of Sciences, Vladivostok, 690041, Russia

    V. A. Levin

  3. Steklov Institute of Mathematics, Russian Academy of Sciences, Moscow, 117966, Russia

    V. V. Markov

Authors
  1. V. A. Levin
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  2. N. E. Afonina
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  3. V. G. Gromov
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  4. I. S. Manuylovich
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  5. V. V. Markov
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  6. G. D. Smekhov
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  7. A. N. Khmelevsky
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Corresponding author

Correspondence to N. E. Afonina.

Additional information

Original Russian Text © V.A. Levin, N.E. Afonina, V.G. Gromov, I.S. Manuylovich, V.V. Markov, G.D. Smekhov, A.N. Khmelevsky, 2015, published in Doklady Akademii Nauk, 2015, Vol. 465, No. 1, pp. 42–45.

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Levin, V.A., Afonina, N.E., Gromov, V.G. et al. Pulsating gas flows in an annular nozzle. Dokl. Phys. 60, 500–503 (2015). https://doi.org/10.1134/S1028335815110026

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  • DOI: https://doi.org/10.1134/S1028335815110026

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