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Issue 10, 2014
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Inertio-elastic instability of non shear-banding wormlike micelles

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Abstract

Homogeneous polymer solutions are well known to exhibit viscoelastic flow instabilities: purely elastic when inertia is negligible and inertio-elastic otherwise. Recently, shear-banding wormlike micelle solutions were also discovered to follow a similar phenomenology. In the shear-banding regime, inertia is usually negligible so only purely elastic flows have been reported. Here, we investigate a non-shear-banding solution where inertia becomes significant, leading to flow patterns akin to the inertio-elastic regime of dilute polymer solutions. We show that the instability follows a supercritical bifurcation and we investigate the structure of the inertio-elastic vortices that develop above the onset.

Graphical abstract: Inertio-elastic instability of non shear-banding wormlike micelles

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Publication details

The article was received on 13 Nov 2013, accepted on 12 Dec 2013 and first published on 13 Dec 2013


Article type: Communication
DOI: 10.1039/C3SM52868E
Citation: Soft Matter, 2014,10, 1450-1454
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    Inertio-elastic instability of non shear-banding wormlike micelles

    C. Perge, M. Fardin and S. Manneville, Soft Matter, 2014, 10, 1450
    DOI: 10.1039/C3SM52868E

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