Elastic Convection in Vibrated Viscoplastic Fluids
Soft Condensed Matter
2009-11-11 v1
Abstract
We observe a new type of behavior in a shear thinning yield stress fluid: freestanding convection rolls driven by vertical oscillation. The convection occurs without the constraint of container boundaries yet the diameter of the rolls is spontaneously selected for a wide range of parameters. The transition to the convecting state occurs without hysteresis when the amplitude of the plate acceleration exceeds a critical value. We find that a non-dimensional stress, the stress due to the inertia of the fluid normalized by the yield stress, governs the onset of the convective motion.
Cite
@article{arxiv.cond-mat/0608150,
title = {Elastic Convection in Vibrated Viscoplastic Fluids},
author = {Hayato Shiba and Jori Ruppert-Felsot and Yoshiki Takahashi and Yoshihiro Murayama and Qi Ouyang and Masaki Sano},
journal= {arXiv preprint arXiv:cond-mat/0608150},
year = {2009}
}
Comments
4 pages, 6 figures