Molecular-dynamics simulation of evaporation processes of fluid bridges confined in slitlike pores

摘要: A simple fluid, described by pointlike particles interacting via the Lennard-Jones potential, is considered under confinement in a slit geometry between two walls at distance L_{z} apart for densities inside vapor-liquid coexistence curve. Equilibrium then requires of liquid "bridge" walls, and vapor remaining pore volume. We study this equilibrium several choices wall-fluid interaction (corresponding to full range from complete wetting drying, macroscopically thick film), consider also kinetics state changes such system. In particular, we how established diffusion processes, when inserted into an initially empty capillary (partial or evaporation vacuum), volume available phase increases. compare constants describing rates these processes inhomogeneous systems corresponding bulk phases.