A phase-field model of Hele-Shaw flows in the high viscosity contrast regime

Details A phase-field model of Hele-Shaw flows in the high viscosity contrast regime A phase-field model of Hele-Shaw flows in the high viscosity contrast regime

2003-09-19

arxiv.org/abs/cond-mat/0309466v1

Phys. Rev. E (2003)

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevE.68.046310

A one-sided phase-field model is proposed to study the dynamics of unstable interfaces of Hele-Shaw flows in the high viscosity contrast regime. The corresponding macroscopic equations are obtained by means of an asymptotic expansion from the phase-field model. Numerical integrations of the phase-field model in a rectangular Hele-Shaw cell reproduce finger competition with the final evolution to a steady state finger the width of which goes to one half of the channel width as the velocity increases.

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