Thermodynamic coarsening arrested by viscous fingering in partially miscible binary mixtures
Name
PhysRevE.94.033111.pdf
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1.11 MB
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Checksum (MD5)
8316466ac796db9a7ea4837775c93294
Author(s)
Fu, Xiaojing
Cueto-Felgueroso Landeira, Luis
Juanes, Ruben
Date Issued
September 2016
Journal
Physical Review E
Publisher
American Physical Society
Citation
Fu, Xiaojing, Luis Cueto-Felgueroso, and Ruben Juanes. “Thermodynamic Coarsening Arrested by Viscous Fingering in Partially Miscible Binary Mixtures.” Physical Review E 94.3 (2016): n. pag. © 2016 American Physical Societ
Version
Final published version
Abstract
We study the evolution of binary mixtures far from equilibrium, and show that the interplay between phase separation and hydrodynamic instability can arrest the Ostwald ripening process characteristic of nonflowing mixtures. We describe a model binary system in a Hele-Shaw cell using a phase-field approach with explicit dependence of both phase fraction and mass concentration. When the viscosity contrast between phases is large (as is the case for gas and liquid phases), an imposed background flow leads to viscous fingering, phase branching, and pinch off. This dynamic flow disorder limits phase growth and arrests thermodynamic coarsening. As a result, the system reaches a regime of statistical steady state in which the binary mixture is permanently driven away from equilibrium.
MIT Department
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering
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DOI of Published Version
https://doi.org/10.1103/PhysRevE.94.033111
