Kinetic model for crystallization in porous media

Leonid Bronfenbrener, Eli Korin

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

A kinetic model for analyzing phase front propagation during freezing of a fine porous medium under conditions of moisture diffusion is presented. Crystallization is assumed to take place in a kinetic zone according to an experimental function characterizing the crystallization rate. The method was demonstrated for the crystallization of a 1-D fine-grained soil medium subject to constant boundary conditions. The numerical results were validated against experimental data from the literature. The following conclusions were inferred from the theoretical results: (1) in a closed system the rate of phase front propagation can oscillate even under constant boundary conditions; (2) as the phase front reaches a stationary state, the diffusional moisture flux from the non-frozen zone to the kinetic zone vanishes.

Original languageEnglish
Pages (from-to)1053-1059
Number of pages7
JournalInternational Journal of Heat and Mass Transfer
Volume40
Issue number5
DOIs
StatePublished - 1 Jan 1997

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