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 language | English (US) |
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Article number | 058303 |
Journal | Physical Review Letters |
Volume | 99 |
Issue number | 5 |
DOIs | |
State | Published - Aug 2 2007 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy