title: Modeling the behavior of confined colloidal particles under shear flow.
abstract: We investigate the behavior of colloidal suspensions with different volume fractions confined between parallel walls under a range of steady shears. We model the particles using molecular dynamics (MD) with full hydrodynamic interactions implemented through the use of a lattice-Boltzmann (LB) fluid. A quasi-2d ordering occurs in systems characterized by a coexistence of coupled layers with different densities, order, and granular temperature. We present a phase diagram in terms of shear and volume fraction for each layer, and demonstrate that particle exchange between layers is required for entering the disordered phase.
authors.affiliation: Department of Applied Mathematics, The University of Western Ontario, Ontario N6A 5B8, London, Canada. fmackay2@uwo.ca cdennist@uwo.ca.
authors.forename: F E
authors.initials: FE
authors.lastname: Mackay
authors.forename: K
authors.initials: K
authors.lastname: Pastor
authors.forename: M
authors.initials: M
authors.lastname: Karttunen
authors.forename: C
authors.initials: C
authors.lastname: Denniston