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Investigation of Oscillation Modes in a High-Speed Flow with Heat Supply. II. Numerical Simulation

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Combustion, Explosion, and Shock Waves Aims and scope

Abstract

Results of numerical simulations of turbulent reacting flows in a channel with sudden expansion with due allowance for injection of hydrogen jets into a supersonic (M = 4) air flow are reported. The simulations are performed in a three-dimensional unsteady formulation with the use of the ANSYS Fluent software under the conditions of experiments performed in the IT-302M high-enthalpy wind tunnel. The computations predict a self-oscillatory regime with intense oscillations of pressure and integral heat release. The period-averaged pressure distribution is in reasonable agreement with the experimental measurements, and the frequency of pressure oscillations is within the range obtained in the experiments. Based on a detailed analysis of the flow characteristics within the full cycle of oscillations, the feedback mechanism responsible for the emergence of self-supported oscillations is refined.

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Authors and Affiliations

  1. Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    N. N. Fedorova, M. A. Goldfeld & V. V. Pickalov

Authors
  1. N. N. Fedorova
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  2. M. A. Goldfeld
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  3. V. V. Pickalov
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Correspondence to N. N. Fedorova.

Additional information

Translated from Fizika Goreniya i Vzryva, 2022, Vol. 58, No. 5, pp. 44-53.https://doi.org/10.15372/FGV20220506.

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Fedorova, N.N., Goldfeld, M.A. & Pickalov, V.V. Investigation of Oscillation Modes in a High-Speed Flow with Heat Supply. II. Numerical Simulation. Combust Explos Shock Waves 58, 546–554 (2022). https://doi.org/10.1134/S0010508222050069

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  • DOI: https://doi.org/10.1134/S0010508222050069

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