  Using Brownian dynamics simulations we perform a systematic investigation of
the shear-induced migration of colloidal particles subject to Poiseuille flow
in both cylindrical and planar geometry. We find that adding an attractive
component to the interparticle interaction enhances the migration effect,
consistent with recent simulation studies of platelet suspensions.
Monodisperse, bidisperse and polydisperse systems are studied over a range of
shear rates, considering both steady states and the transient dynamics arising
from the onset of flow. For bidisperse and polydisperse systems size
segregation is observed.
