Interface evolution during radial miscible viscous fingering.

Modeling of Radial Source Flow in Porous Media: Miscible Viscous Fingering Patterns

Introduction: Viscous fingering, a hydrodynamic instability characterized by complex patterns, is observed when a less viscous fluid displaces a more viscous one in porous medium [1]. The displacement is either rectilinear or radial; both having equal importance in many real life applications. The fingering patterns in radial Hele-Shaw flows have been studied both experimentally [2], and numeri...

Hybrid Simulation of Miscible Mixing with Viscous Fingering

By modeling mass transfer phenomena, we simulate solids and liquids dissolving or changing to other substances. We also deal with the very small-scale phenomena that occur when a fluid spreads out at the interface of another fluid. We model the pressure at the interfaces between fluids with Darcy’s Law and represent the viscous fingering phenomenon in which a fluid interface spreads out with a ...

Local Structure of a Reactive Flow Field on Miscible Viscous Fingering with Chemical Reaction

Thermodynamic coarsening arrested by viscous fingering in partially miscible binary mixtures.

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 viscosit...

Viscous fingering of miscible slices

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