Collision of Dynamic Jamming Fronts in a Dense Suspension

Olav Ro mcke; Ivo R. Peters; R. Jason Hearst

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arXiv · 2107.04439

Collision of Dynamic Jamming Fronts in a Dense Suspension

Olav Ro mcke·Ivo R. Peters·R. Jason Hearst

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Abstract

Dynamic jamming is a phenomenon whereby a dense suspension switches from a fluid-like to a solid-like state when subjected to sufficient stress and deformation. Large enough systems show that this transition is accompanied by a distinct jamming front. We present an experimental study where two jamming fronts are created simultaneously using two cylinders moving in parallel. We focus our observations on the collision of the jammed regions when the two fronts meet. Surprisingly, our measurements, combining surface texture visualization and time-resolved particle image velocimetry, show the formation of an unjammed region contained within the otherwise jammed suspension.

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Olav Ro mcke, Ivo R. Peters, R. Jason Hearst. 2021-07-09. Collision of Dynamic Jamming Fronts in a Dense Suspension. https://arxiv.org/abs/2107.04439

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