Dynamics of Rarefied Polyatomic Gas with Molecular Relaxation Processes Based on Extended Thermodynamics

DOI

Bibliographic Information

Other Title
  • 分子内部運動の緩和を伴う多原子分子・希薄気体の力学 －拡張された熱力学の展開－

Abstract

<p>We present an extended thermodynamics theory which describes two essential dissipative processes in a rarefied polyatomic gas, that is, the processes with (i) molecular rotational and vibrational relaxation, and (ii) viscous and heat-conduction. The independent variables of the theory are the moment of a distribution function which obeys the Boltzmann equation. We introduce a simple collision term with three relaxation times, which is a generalization of the BGK model. The closed field equations are derived using the maximum entropy principle. As a typical application of the theory, we study linear wave propagation phenomena in a gas.</p>

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Details 詳細情報について

  • CRID
    1390571106617224704
  • NII Article ID
    130008100877
  • DOI
    10.11345/japannctam.65.0_211
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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