Stretch-coil transition and transport of fibers in cellular flows

Y. N. Young, Michael J. Shelley

Research output: Contribution to journalArticle

Abstract

It is shown that a slender elastic fiber moving in a Stokesian fluid can be susceptible to a buckling instability-termed the "stretch-coil" instability-when moving in the neighborhood of a hyperbolic stagnation point of the flow. When the stagnation point is part of an extended cellular flow, it is found that immersed fibers can move as random walkers across time-independent closed-streamline flow. It is also found that the flow is segregated into transport regions around hyperbolic stagnation points and their manifolds, and closed entrapment regions around elliptic points.

Original languageEnglish (US)
Article number058303
JournalPhysical Review Letters
Volume99
Issue number5
DOIs
StatePublished - Aug 2 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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