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Study of stable and unstable jet flows on the basis of the boltzmann equation

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Abstract

Free supersonic underexpanded jets are studied using a direct method conservative splitting scheme for solving the Boltzmann equation. Numerical solutions for a jet flowing into a vacuum and into a fluid-filled space are presented for the following ranges of the parameters: Knudsen number 10−6<Kn<∞ and pressure ratio 10<n<∞. The solutions are compared with experimental data. Instabilities associated with free turbulence effects in the mixing layer are detected for low Kn numbers.

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Authors
  1. V. V. Aristov
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Additional information

Moscow. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 2, pp. 153–157, March–April, 1998.

The work was carried out with support from the Russian Foundation for Fundamental Research (project No. 96-01-00829).

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Aristov, V.V. Study of stable and unstable jet flows on the basis of the boltzmann equation. Fluid Dyn 33, 280–283 (1998). https://doi.org/10.1007/BF02698713

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  • DOI: https://doi.org/10.1007/BF02698713

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