Inverse phenomenon of nucleation rate in binary liquid-gas mixtures (molecular dynamics study of molecular diameter dependence on the inverse phenomenon)

Shinichi Tsuda, Takashi Tokumasu, Shu Takagi, Yoichiro Matsumoto

研究成果: Contribution to journalArticle

抜粋

Bubble nucleation phenomenon in presence of gas impurities is studied by microcanonical molecular dynamics simulation for Lennard-Jones fluid. First, we investigate effect of molecular diameter of dissolved gas on the nucleation rate with pressure change. As a result, we find increase of the nucleation rate with increase of the pressure, which we call "inverse" pressure phenomenon, when interaction of dissolved gas is very weak. In this case, we confirm that a gas with the larger diameter enhances composition fluctuation or phase separation. Next, we estimate effect of the diameter on spinodal point through calculation of equation of state (EOS), and confirm that effect of the diameter on spinodal point at low temperature range becomes larger as the interaction of dissolved gas becomes weaker. Finally, we examine applicability of the superheat ratio expressed by saturation pressure and spinodal pressure, and confirm its validity to explain the inverse change of the nucleation rate.

元の言語英語
ページ(範囲)1893-1900
ページ数8
ジャーナルNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
71
発行部数707
DOI
出版物ステータス出版済み - 7 2005
外部発表Yes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

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