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Numerical modeling of precessing vortex core in the presence of local heat sources

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Abstract

Based on the results of numerical simulation of a nonstationary, nonaxisymmetric turbulent swirling gas flow in a tube with local sources of heat release, it is shown that a precessing vortex core (PVC) appears at supercritical values of the swirl parameter as a result of the development of instability of a left-handed bending mode. The dependence of the PVC frequency on the mass flow rate of the gas and the heat-source power has been studied. As the heat-source power increases, the frequency of precession grows while the amplitude of vortex core oscillations drops.

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Authors and Affiliations

  1. Samara State Aerospace University, Samara, 443086, Russia

    I. P. Zavershinskii, E. Ya. Kogan, V. G. Makaryan, N. E. Molevich, D. P. Porfir’ev & S. S. Sugak

  2. Lebedev Institute of Physics (Samara Branch), Russian Academy of Sciences, Samara, 443011, Russia

    I. P. Zavershinskii, E. Ya. Kogan, V. G. Makaryan, N. E. Molevich, D. P. Porfir’ev & S. S. Sugak

Authors
  1. I. P. Zavershinskii
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  2. E. Ya. Kogan
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  3. V. G. Makaryan
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  4. N. E. Molevich
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  5. D. P. Porfir’ev
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  6. S. S. Sugak
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Correspondence to I. P. Zavershinskii.

Additional information

Original Russian Text © I.P. Zavershinskii, E.Ya. Kogan, V.G. Makaryan, N.E. Molevich, D.P. Porfir’ev, S.S. Sugak, 2013, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2013, Vol. 39, No. 7, pp. 34–43.

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Zavershinskii, I.P., Kogan, E.Y., Makaryan, V.G. et al. Numerical modeling of precessing vortex core in the presence of local heat sources. Tech. Phys. Lett. 39, 333–336 (2013). https://doi.org/10.1134/S1063785013040135

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  • DOI: https://doi.org/10.1134/S1063785013040135

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