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Nonisotropic solutions of the Boltzmann equation

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Abstract

We consider the relaxation to equilibrium of a spatially uniform Maxwellian gas. We expand the solution of the nonlinear Boltzmann equation in a truncated series of orthogonal functions. We integrate numerically the equation for non-isotropic initial conditions. For certain simple conditions we find interesting proximity effects and other transient relaxation phenomena at thermal energies. Furthermore, we define a resummation of the orthogonal expansion which is more convenient than the original one for the numerical analysis of the relaxation process.

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Authors and Affiliations

  1. Centro Atómico Bariloche, Comisión Nacional de Energia Atómica, 8400, Bariloche, R.N., Argentina

    R. O. Barrachina & C. R. Garibotti

  2. Consejo Nacional de Investigaciones Cientificas y Técnicas, Argentina

    C. R. Garibotti

Authors
  1. R. O. Barrachina
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  2. C. R. Garibotti
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Barrachina, R.O., Garibotti, C.R. Nonisotropic solutions of the Boltzmann equation. J Stat Phys 45, 541–560 (1986). https://doi.org/10.1007/BF01021085

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  • DOI: https://doi.org/10.1007/BF01021085

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