Lattice Boltzmann simulations of lamellar and droplet phases
G. Gonnella, E. Orlandini, J. M. Yeomans
TL;DR
This paper uses lattice Boltzmann simulations to study phase separation in binary fluids, highlighting the role of hydrodynamics and revealing spiral structures in lamellar phases.
Contribution
It introduces a detailed simulation approach to analyze lamellar and droplet phase formation, emphasizing hydrodynamic effects on morphology.
Findings
Hydrodynamics significantly influence phase separation kinetics.
Spiral structures form in lamellar phases to reduce elastic energy.
Distinct phase separation behaviors observed in asymmetric mixtures.
Abstract
Lattice Boltzmann simulations are used to investigate spinodal decomposition in a two-dimensional binary fluid with equilibrium lamellar and droplet phases. We emphasise the importance of hydrodynamic flow to the phase separation kinetics. For mixtures slightly asymmetric in composition the fluid phase separates into bulk and lamellar phases with the lamellae forming distinctive spiral structures to minimise their elastic energy.
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