分子動力学法による真空下での蒸発の研究

概要

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Evaporation of an argon liquid layer exposed in a vacuum is analyzed by the molecular dynamics method. The detailed structure of the liquid-vapor interface and angular distribution of evaporated molecules are examined and compared with the results based on the kinetic theory. In equilibrium, a thin transition layer in which density changes continuously appears between the two phases. Upon this density transition layer, another thin layer is found. In this layer, molecules interact with those in the liquid layer, and flow velocity changes quickly but continuously. The angular distribution of evaporated molecules, which is initially close to the cosine distribution, rapidly changes just above the interface because of the interaction among evaporated molecules ; they much prefer the normal direction.
一般社団法人日本機械学会の論文
1994-11-25