Julia Yeomans OBE FRS

Abstract:

We use lattice Boltzmann simulations to investigate the way in which the spinodal decomposition of binary fluids depends on their viscosity and diffusivity. Both bulk phase separation and ordering in a lamellar structure are discussed.

Abstract:

Lattice Boltzmann simulations are used to study the phase ordering of a system quenched into a lamellar phase. Hydrodynamic modes are found to be essential for the fluid to avoid frozen metastable configurations and reach the equilibrium state. We also show that a shear imposed on an equilibrium array of droplets can induce a micellar-lamellar transition.

Abstract:

We use lattice-Boltzmann simulations to examine late stage spinodal decomposition in binary fluids, showing that the scaling hypothesis for phase ordering does not hold in all cases. We also examine the effects of an applied shear on the coarsening of the spinodal pattern.