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Updated: Mar 16, 2026

The Diffusion of Passive Tracers in Laminar Shear Flow
Published on: May 1, 2018
Dynamics of flexible fibers and vesicles in Poiseuille flow at low Reynolds number
Alexander Farutin1, Tomasz Piasecki, Agnieszka M Słowicka
1Univ. Grenoble Alpes, LIPHY, F-38000 Grenoble, France.
Abstract:
The dynamics of flexible fibers and vesicles in unbounded planar Poiseuille flow at low Reynolds number is shown to exhibit similar basic features, when their equilibrium (moderate) aspect ratio is the same and vesicle viscosity contrast is relatively high. Tumbling, lateral migration, accumulation and shape evolution of these two types of flexible objects are analyzed numerically. The linear dependence of the accumulation position on relative bending rigidity, and other universal scalings are derived from the local shear flow approximation.
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