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Instability

Flow of complex fluids on a vertical fiber: suppression of the Rayleigh-Plateau instability

The flow of a liquid on a vertical fiber creates an instability driven by the surface tension: the Rayleigh-Plateau instability.Knowing results obtained by Camille Duprat on Newtonian fluids, we considered how non-Newtonian flow properties of complex fluids can modify the pattern developed by the instability. Thus, we have shown in particular that solutions of giant micelles can suppress the instability thanks to the bulk elasticity generated by the shear flow.

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Publications about instabilities of complex fluids:

2 results
2013
[2]F. Boulogne, M. Fardin, S. Lerouge, F. Giorgiutti-Dauphiné, L. Pauchard, "Suppression of the Rayleigh-Plateau instability on a vertical fibre coated with wormlike micelle solutions", Soft Matter, vol. 9, 2013, pp. 7787–7796. [bibtex] [doi] [arxiv] [hal]
2012
[1]F. Boulogne, L. Pauchard and F. Giorgiutti-Dauphiné, "Instability and morphology of polymer solutions coating a fibre", Journal of Fluid Mechanics, vol. 704, 7 2012, pp. 232–250. [bibtex] [doi] [arxiv] [hal]