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Thermodynamic coarsening arrested by viscous fingering in partially miscible binary mixtures

Fu, Xiaojing and Cueto-Felgueroso, Luis and Juanes, Ruben (2016) Thermodynamic coarsening arrested by viscous fingering in partially miscible binary mixtures. Physical Review E, 94 (3). Art. No. 033111. ISSN 2470-0045. https://resolver.caltech.edu/CaltechAUTHORS:20200903-141934400

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[img] Video (MPEG) (Video 1. Left: Ostwald ripening in a quiescent mixture (no-flow). Right: arrest of Ostwald coarsening by viscous fingering, as a result of introducing left-to-right flow at t=40) - Supplemental Material
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[img] Video (MPEG) (Video 2. Simulation with left-to-right flow, with colormap highlighting local supersaturation during bubble dissolution events) - Supplemental Material
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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/physreve.94.033111DOIArticle
ORCID:
AuthorORCID
Fu, Xiaojing0000-0001-7120-704X
Juanes, Ruben0000-0002-7370-2332
Additional Information:© 2016 American Physical Society. Received 11 March 2016; published 20 September 2016. This work was funded by the US Department of Energy (CAREER Award DE-SC0003907, and Grants No. DE-SC0009286 and No. DE-FE0013999). L.C.F. acknowledges a ‘Ramon y Cajal’ Fellowship from the Spanish Ministry of Economy and Competitiveness (RYC-2012-11704).
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0003907
Department of Energy (DOE)DE-SC0009286
Department of Energy (DOE)DE-FE0013999
Ministerio de Economía, Industria y Competitividad (MINECO)RYC-2012-11704
Ramón y Cajal ProgrammeUNSPECIFIED
Issue or Number:3
Record Number:CaltechAUTHORS:20200903-141934400
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200903-141934400
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:105248
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:08 Sep 2020 18:26
Last Modified:08 Sep 2020 18:26

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