気液界面における蒸発凝縮の分子機構とその周辺 Molecular Mechanism of Evaporation-Condensation on Vapor-Liquid Interface
Molecular dynamics computer simulation technique has been applied to investigate fluid phase change mechanisms near vapor-liquid interfaces. The simulation enables us to estimate the most relevant parameter, condensation coefficient α<SUB>c</SUB>, which is the ratio of condensation flux to vapor collision flux. We found: (i) α<SUB>c</SUB> is less than unity even for simple fluids, and α<SUB>c</SUB> of associating fluids is much less than that. (ii) There is a strong temperature dependence of α<SUB>c</SUB>. (iii) Under the nonequilibrium condition, α<SUB>c</SUB> depends also on the density (or pressure) and the temperature of the vapor. A simple evaporation model based on a transition state theory can explain this behavior to some extent. As related topics, molecular dynamics of nucleation processes is also described.
- 高圧力の科学と技術 = The Review of high pressure science and technology
高圧力の科学と技術 = The Review of high pressure science and technology 6(1), 58-65, 1997-02-20
The Japan Society of High Pressure Science and Technology