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Stability analysis of stratified coating flow of shear-thinning fluids

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Abstract

This study is a linear stability analysis of a two-layer non-Newtonian film flow driven by gravity down an inclined plane. The fluids rheology is described by the Carreau law. The effects of density stratification are studied in the case of a less viscous layer adjacent to the wall, which is favourable to interfacial instabilities. We highlight that shear-thinning can have stabilizing as well as destabilizing effects according to the wavelength and the position of the Carreau fluid layers.

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Authors and Affiliations

  1. Université de Lyon, Université Lyon 1, INSA de Lyon, École Centrale de Lyon, Laboratoire de Mécanique des Fluides et d’Acoustique UMR CNRS 5509, Lyon, France

    S. Millet, F. Rousset, V. Botton & H. Ben Hadid

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  1. S. Millet
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  2. F. Rousset
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  3. V. Botton
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  4. H. Ben Hadid
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Correspondence to S. Millet.

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Millet, S., Rousset, F., Botton, V. et al. Stability analysis of stratified coating flow of shear-thinning fluids. Eur. Phys. J. Spec. Top. 166, 143–146 (2009). https://doi.org/10.1140/epjst/e2009-00895-9

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  • DOI: https://doi.org/10.1140/epjst/e2009-00895-9

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