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Polymer conformations and hysteretic stresses in nonstationary flows of polymer solutions

Francois, Nicolas; Amarouchene, Y.; Lounis, B.; Kellay, H.


The low Reynolds number flow of a polymer solution around a cylinder engenders a nonlinear drag force vs. the flow velocity. A velocity quench of such a flow gives rise to a long time relaxation and hysteresis of the stress due to history-dependent elastic effects. Our results suggest that such hysteretic behavior has its origin in the long time relaxation dynamics and hysteresis of the polymer conformations.

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
Source: Europhysics Letters
DOI: 10.1209/0295-5075/86/34002


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