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Enhancing shear thickening

Abstract : A cornstarch suspension is the quintessential particulate system that exhibits shear thickening. By adding large non-Brownian spheres to a cornstarch suspension, we show that shear thickening can be significantly enhanced. More precisely, the shear-thickening transition is found to be increasingly shifted to lower critical shear rates. This influence of the large particles on the discontinuous shear-thickening transition is shown to be more dramatic than that on the viscosity or the yield stress of the suspension.
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Yasaman Madraki, Sarah Hormozi, Guillaume Ovarlez, Elisabeth Guazzelli, Olivier Pouliquen. Enhancing shear thickening. Physical Review Fluids, American Physical Society, 2017, 2 (3), pp.33301. ⟨10.1103/PhysRevFluids.2.033301⟩. ⟨hal-01768481⟩

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