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arXiv · 1306.3320

Drop impact of shear thickening liquids

Francois Boyer·Jacco H. Snoeijer·J. Frits Dijksman·Detlef Lohse
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Abstract

The impact of drops of concentrated non-Brownian suspensions (cornstarch and polystyrene spheres) onto a solid surface is investigated experimentally. The spreading dynamics and maxi- mal deformation of the droplet of such shear thickening liquids are found to be markedly different from the impact of Newtonian drops. A particularly striking observation is that the maximal de- formation is independent of the drop velocity and that the deformation suddenly stops during the impact phase. Both observations are due to the shear-thickening rheology of the suspensions, as is theoretically explained from a balance between the kinetic energy and the viscously-dissipated en- ergy, from which we establish a scaling relation between drop maximal deformation and rheological parameters of concentrated suspensions.

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Francois Boyer, Jacco H. Snoeijer, J. Frits Dijksman, Detlef Lohse. 2013-06-14. Drop impact of shear thickening liquids. https://doi.org/10.1103/physrevfluids.1.013901

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