Elastic convection in vibrated viscoplastic fluids

Hayato Shiba, Jori E. Ruppert-Felsot, Yoshiki Takahashi, Yoshihiro Murayama, Qi Ouyang, Masaki Sano

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


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 nondimensional stress, the stress due to the inertia of the fluid normalized by the yield stress, governs the onset of the convective motion.

Original languageEnglish
Article number044501
JournalPhysical review letters
Issue number4
Publication statusPublished - 2007
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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