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Abstract <p>The peculiarities of solving evaporation problems are analyzed. Different methods of setting boundary conditions for continuum mechanics equations are studied. This paper presents results of applying continuum mechanics equations together with the kinetic Boltzmann equation, as well as using molecular dynamic simulation, to find the velocity distribution function of molecules near the interface. The distribution function of molecules moving away from the interface is determined. It is shown that the evaporation and condensation coefficients in the considered problems are close to unity.</p>

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Boundary Conditions for Transport Problems on the Evaporation Surface

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • V. Yu. Levashov,
  • A. P. Kryukov

摘要

Abstract

The peculiarities of solving evaporation problems are analyzed. Different methods of setting boundary conditions for continuum mechanics equations are studied. This paper presents results of applying continuum mechanics equations together with the kinetic Boltzmann equation, as well as using molecular dynamic simulation, to find the velocity distribution function of molecules near the interface. The distribution function of molecules moving away from the interface is determined. It is shown that the evaporation and condensation coefficients in the considered problems are close to unity.