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Approximate system of equations for describing nonstationary natural concentration convection in binary gas mixtures

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Abstract

Analysis of the Navier-Stokes equations at small values of the hydrostatic compressibility parameter leads to the formulation of an approximate system of equations for describing nonstationary natural convection in isothermal binary mixtures of gases with arbitrary ratio of the densities. A system of equations for nonstationary concentration convection is also obtained in the Boussinesq approximation, and it is shown that its use in the solution of the considered class of problems may lead to not only quantitative errors but also to a qualitative distortion of the results.

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Authors and Affiliations

  1. Leningrad

    D. A. Nikulin, G. S. Potekhin & M. Kh. Strelets

Authors
  1. D. A. Nikulin
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  2. G. S. Potekhin
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  3. M. Kh. Strelets
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Translated from Izvestiya Akademii Nauk SSSR, Mekhanika Zhidkosti i Gaza, No. 5, pp. 57–61, September–October, 1980.

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Nikulin, D.A., Potekhin, G.S. & Strelets, M.K. Approximate system of equations for describing nonstationary natural concentration convection in binary gas mixtures. Fluid Dyn 15, 679–683 (1980). https://doi.org/10.1007/BF01089639

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  • DOI: https://doi.org/10.1007/BF01089639

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