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An experimental study of the structure of supersonic flat underexpanded microjets

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Abstract

We have experimentally studied the structure of supersonic flat underexpanded room-temperature air jets escaping from micro nozzles with characteristic heights from 47 to 175 μm and widths within 2410–3900 μm in a range of Reynolds numbers of 1280–9460. The dimensions of the first shock cell are established. The supersonic core length of supersonic flat underexpanded air jets has been determined for the first time. A flow regime with a large supersonic core length has been observed for air jets escaping from a 47-μm-high nozzle.

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Authors and Affiliations

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

    V. M. Aniskin, A. A. Maslov, S. G. Mironov, I. S. Tsyryulnikov & I. V. Timofeev

  2. Novosibirsk State University, Novosibirsk, 630090, Russia

    V. M. Aniskin, A. A. Maslov, S. G. Mironov & I. S. Tsyryulnikov

Authors
  1. V. M. Aniskin
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  2. A. A. Maslov
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  3. S. G. Mironov
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  4. I. S. Tsyryulnikov
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  5. I. V. Timofeev
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Corresponding author

Correspondence to V. M. Aniskin.

Additional information

Original Russian Text © V.M. Aniskin, A.A. Maslov, S.G. Mironov, I.S. Tsyryulnikov, I.V. Timofeev, 2015, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2015, Vol. 41, No. 10, pp. 97–103.

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Aniskin, V.M., Maslov, A.A., Mironov, S.G. et al. An experimental study of the structure of supersonic flat underexpanded microjets. Tech. Phys. Lett. 41, 508–510 (2015). https://doi.org/10.1134/S106378501505017X

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  • DOI: https://doi.org/10.1134/S106378501505017X

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