Dynamics of fibers in a wide microchannel

Abstract

Dynamics of single flexible non-Brownian fibers, tumbling in a Poiseuille flow between two parallel solid plane walls, is studied with the use of the hydromultipole numerical code, based on the multipole expansion of the Stokes equations, corrected for lubrication. It is shown that for a wide range of the system parameters, the migration rate towards the middle plane of the channel increases for fibers, which are closer to a wall, or are more flexible (less stiff), or are longer. The faster motion towards the channel center is accompanied by a slower translation along the flow and a larger fiber deformation.

9 pages, 16 figures

References in corpus (4)

• Semidilute Polymer Solutions at Equilibrium and under Shear Flow
• Numerical Study of a Microscopic Artificial Swimmer
• Migration of semiflexible polymers in microcapillary flow
• Mesoscale simulations of polymer dynamics in microchannel flows

Cited by in corpus (5)

• A general formulation of Bead Models applied to flexible fibers and active filaments at low Reynolds number
• Dynamics and Topology of Flexible Chains: Knots in Steady Shear Flows
• Dynamics of flexible fibers in shear flow
• Flexible fibers in shear flow approach attracting periodic solutions
• Deformation of a flexible fiber in a viscous flow past an obstacle