Adiabatic effects in nucleation near the gas-liquid critical point

Akira Onuki

Physica A: Statistical Mechanics and its Applications, 1996, vol. 234, issue 1, 189-205

Abstract: Nucleation near the gas-liquid critical point sensitively depends on whether the pressure or the volume is fixed. Upon decompression to a constant pressure, bulk nucleation can well be induced from a gas state, whereas phase separation from a liquid state is more easily triggered in the thermal diffusion layer near the boundary. In this case bulk nucleation in a metastable gas is described by the classical Lifshitz-Slyozov theory. On the other hand, upon cooling of the boundary temperature under the fixed-volume condition, bulk nucleation can be realized in a liquid and a modified Lifshitz-Slyozov theory follows. However, if a gas is cooled from the boundary at a fixed volume, phase separation readily occurs in the thermal diffusion layer, apparently suggesting no metastability in a gas in agreement with previous experiments.

Date: 1996
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:234:y:1996:i:1:p:189-205

DOI: 10.1016/S0378-4371(96)00262-2

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