Matthieu Roché
LMSC, Université de Paris Cité
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Thin-Film Flows of Granular Suspensions
In recent years, the mechanics of granular suspensions has attracted renewed interest, particularly following the identification of analogies between their flow behavior and that of dry granular materials, especially at high volume fractions. Most of this interest has focused on bulk flows. In contrast, thin-film flows of such suspensions have received comparatively little attention, despite experimental observations that often cannot be predicted from bulk properties alone. In this presentation, I will discuss two examples of recent work we have conducted on thin-film flows of suspensions. In the first part, I will describe the spreading dynamics of suspensions, focusing on the effects arising from particle confinement by the free surface. In the second part, I will present our study of the Rayleigh–Taylor instability in two-dimensional films of suspensions.
