Phase Separation under Shear in Two-dimensional Binary Fluids

Details Phase Separation under Shear in Two-dimensional Binary Fluids Phase Separation under Shear in Two-dimensional Binary Fluids

1999-04-01

arxiv.org/abs/cond-mat/9904033v1

Physics

Condensed Matter

Soft Condensed Matter

9 pages, 5 figures, accepted for publication in PRE

Scientific paper

10.1103/PhysRevE.59.4366

We use lattice Boltzmann simulations to study the effect of shear on the phase ordering of a two-dimensional binary fluid. The shear is imposed by generalising the lattice Boltzmann algorithm to include Lees-Edwards boundary conditions. We show how the interplay between the ordering effects of the spinodal decomposition and the disordering tendencies of the shear, which depends on the shear rate and the fluid viscosity, can lead to a state of dynamic equilibrium where domains are continually broken up and re-formed.

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