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Accueil du site > Évènements > Séminaires > Séminaires IUSTI > Archives IUSTI > 2021

Vendredi 1 octobre 2021 / IUSTI

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Séminaire IUSTI

Two new jamming scenarios – oscillatory and directional

Orateur : Martin Trulsson / Lund University, Suède

Abstract : Recent studies have shown that cross-flows oscillatory shear flows can reduce a suspension’s viscosity. Furthermore, these oscillations can push the shear-jamming transition to higher packing fractions. In this talk, we will see that these oscillations lead to a cross-over from steady-state rheology to an oscillatory, distinct from the steady-state one for small oscillatory strains. Moving to elliptical particles, we will see yet another jamming scenario where a suspension flows in one direction but jams in the opposite direction. Applying oscillations to try to unblock these jammed states turns out harder than predicted, leading to protocol-dependent oscillatory shear rheology.

Date et lieu : le vendredi 1er octobre 2021 à 11h, salle 250, IUSTI

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