title: Cross-stream migration in dilute solutions of rigid polymers undergoing rectilinear flow near a wall.
abstract: Kinetic theory is used to investigate cross-stream migration of a rigid polymer undergoing rectilinear flow in the vicinity of a wall. Hydrodynamic interactions between the polymers and the boundary result in a cross-stream migration. In simple shear flow, polymers migrate away from the wall, creating a depletion layer in the vicinity of the wall which thickens as the flow strength increases relative to the Brownian force. In pressure-driven flow, an off-center maximum in the center-of-mass distribution occurs due to a competition between hydrodynamic interactions with the wall and the anisotropic diffusivity induced by the inhomogeneous flow field.
authors.affiliation: Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, USA.
authors.forename: Joontaek
authors.initials: J
authors.lastname: Park
authors.forename: Jonathan M
authors.initials: JM
authors.lastname: Bricker
authors.forename: Jason E
authors.initials: JE
authors.lastname: Butler