Enhancing Mixing and Diffusion with Plastic Flow

Details Enhancing Mixing and Diffusion with Plastic Flow Enhancing Mixing and Diffusion with Plastic Flow

2007-06-18

arxiv.org/abs/0706.2681v1

Phys. Rev. E 78, 031401 (2008)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 postscript figures

Scientific paper

10.1103/PhysRevE.78.031401

We use numerical simulations to examine two-dimensional particle mixtures that strongly phase separate in equilibrium. When the system is externally driven in the presence of quenched disorder, plastic flow occurs in the form of meandering and strongly mixing channels. In some cases this can produce a fast and complete mixing of previously segregated particle species, as well as an enhancement of transverse diffusion even in the absence of thermal fluctuations. We map the mixing phase diagram as a function of external driving and quenched disorder parameters.

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