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Thermodynamic coarsening arrested by viscous fingering in partially miscible binary mixtures

Journal Article · · Physical Review E
 [1];  [2];  [3]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); none
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Technical Univ. of Madrid, Madrid (Spain)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)

We view the evolution of binary mixtures far from equilibrium, and demonstrate 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. Because of this, the system reaches a regime of statistical steady state in which the binary mixture is permanently driven away from equilibrium.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Univ. of Texas, Austin, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
Grant/Contract Number:
FE0013999
OSTI ID:
1505596
Alternate ID(s):
OSTI ID: 1325613
Journal Information:
Physical Review E, Journal Name: Physical Review E Journal Issue: 3 Vol. 94; ISSN PLEEE8; ISSN 2470-0045
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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  • Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, Vol. 245, Issue 1242, p. 312-329 https://doi.org/10.1098/rspa.1958.0085
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Cited By (3)

Gravity‐Induced Bubble Ripening in Porous Media and Its Impact on Capillary Trapping Stability journal December 2019
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Figures / Tables (5)


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