Abstract.

We investigate the flow of a concentrated suspension of colloidal particles at deformation rates higher than the discontinuous shear-thickening transition shear rate. We show that, under its own weight, a jet of a concentrated enough colloidal suspension, simultaneously flows while it sustains tensile stress and transmits transverse waves. This results in a new flow instability of jets of shear-thickening suspensions: the jet is submitted to rapid transverse oscillations, that we characterize.

Graphical abstract

中文翻译：

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剪切浓稠悬浮液的射流不稳定性

摘要。

我们研究了比不连续剪切增稠过渡剪切速率高的变形速率的胶体颗粒浓缩悬浮液的流动。我们表明，在自身重量的作用下，足够集中的胶体悬浮液的射流在维持拉伸应力并传输横向波的同时流动。这导致了增稠剪切力悬浮液的射流出现新的流动不稳定性：我们表征了该射流经受了快速的横向振荡。

图形概要