Phase ordering of two-dimensional symmetric binary fluids: a droplet scaling state

Details Phase ordering of two-dimensional symmetric binary fluids: a droplet scaling state Phase ordering of two-dimensional symmetric binary fluids: a droplet scaling state

2001-01-10

arxiv.org/abs/cond-mat/0101140v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, three figures included

Scientific paper

10.1209/epl/i2001-00551-4

The late-stage phase ordering, in $d=2$ dimensions, of symmetric fluid mixtures violates dynamical scaling. We show however that, even at 50/50 volume fractions, if an asymmetric droplet morphology is initially present then this sustains itself, throughout the viscous hydrodynamic regime, by a `coalescence-induced coalescence' mechanism. Scaling is recovered (with length scale $l \sim t$, as in $d=3$). The crossover to the inertial hydrodynamic regime is delayed even longer than in $d=3$; on entering it, full symmetry is finally restored and we find $l\sim t^{2/3}$, regardless of the initial state.

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