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The efficiency of the method of sound-absorbing coatings in vibrationally excited hypersonic flow

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Abstract

We have studied the effect of a porous sound-absorbing insert on the intensity of pressure pulsations in the high-temperature hypersonic flow of carbon dioxide past the surface of a plate oriented at a 10.2° angle of attack. The mode composition of disturbances in the flow core of a pulsed wind tunnel has been experimentally determined, which is dominated by acoustic disturbances of a fast mode. It is established that, under the action of acoustic disturbances of the fast mode on the shock layer, the sound-absorbing insert reduces the intensity of pressure pulsations on the plate surface as compared to a continuous surface. The experimental data are compared to the results of numerical simulations.

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Authors and Affiliations

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

    I. S. Tsyryulnikov, A. A. Maslov, S. G. Mironov, T. V. Poplavskaya & S. V. Kirilovskiy

Authors
  1. I. S. Tsyryulnikov
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  2. A. A. Maslov
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  3. S. G. Mironov
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  4. T. V. Poplavskaya
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  5. S. V. Kirilovskiy
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Corresponding author

Correspondence to T. V. Poplavskaya.

Additional information

Original Russian Text © I.S. Tsyryulnikov, A.A. Maslov, S.G. Mironov, T.V. Poplavskaya, S.V. Kirilovskiy, 2015, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2015, Vol. 41, No. 4, pp. 61–67.

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Tsyryulnikov, I.S., Maslov, A.A., Mironov, S.G. et al. The efficiency of the method of sound-absorbing coatings in vibrationally excited hypersonic flow. Tech. Phys. Lett. 41, 184–186 (2015). https://doi.org/10.1134/S1063785015020273

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  • DOI: https://doi.org/10.1134/S1063785015020273

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