Swapping trajectories: a new wall-induced cross-streamline particle migration mechanism in a dilute suspension of spheres

• Published in: Journal of fluid mechanics Vol. 592; pp. 447 - 469
• Main Authors: ZURITA-GOTOR, M., BŁAWZDZIEWICZ, J., WAJNRYB, E.
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 10.12.2007
• Subjects: Diffusion; Exact sciences and technology; Fluid dynamics; Fluid mechanics; Fundamental areas of phenomenology (including applications); Laminar flows; Laminar suspensions; Mathematics; Mechanical engineering; Multiphase and particle-laden flows; Nonhomogeneous flows; Physics; Shear loading; Streamlines; Shear flow; Particle motion; Digital simulation; Creeping flow; Trajectories; Particle suspension; Relative motion; Dilute suspension; Two-phase flow; Modelling; Wall effects; Spherical particle

Binary encounters between spherical particles in shear flow are studied for a system bounded by a single planar wall or two parallel planar walls under creeping flow conditions. We show that wall proximity gives rise to a new class of binary trajectories resulting in cross-streamline migration of th...