Emergence of chaos in a viscous solution of rods

It is shown that the addition of small amounts of microscopic rods in a viscous fluid at low Reynolds number causes a significant increase of the flow resistance. Numerical simulations of the dynamics of the solution reveal that this phenomenon is associated to a transition from laminar to chaotic f...

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Bibliographic Details
Published inarXiv.org
Main Authors Emmanuel L C VI M Plan, Musacchio, Stefano, Vincenzi, Dario
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 11.05.2017
Subjects
Computational fluid dynamics
Computer simulation
Flow resistance
Fluid flow
Laminar flow
Physics - Fluid Dynamics
Reynolds number
Rods
Viscosity
Viscous fluids
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Summary:It is shown that the addition of small amounts of microscopic rods in a viscous fluid at low Reynolds number causes a significant increase of the flow resistance. Numerical simulations of the dynamics of the solution reveal that this phenomenon is associated to a transition from laminar to chaotic flow. Polymer stresses give rise to flow instabilities which, in turn, perturb the alignment of the rods. This coupled dynamics results in the activation of a wide range of scales, which enhances the mixing efficiency of viscous flows.
ISSN:2331-8422
DOI:10.48550/arxiv.1705.05223