Steadily oscillating axial bands of binary granules in a nearly filled coaxial cylinder

Shio Inagaki, Hiroyuki Ebata, Kenichi Yoshikawa

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Granular materials often segregate under mechanical agitation such as flowing, shaking, or rotating, in contrast to an expectation of mixing. It is well known that bidisperse mixtures of granular materials in a partially filled rotating cylinder exhibit monotonic coarsening dynamics of segregation. Here we report the steady oscillation of segregated axial bands under the stationary rotation of a nearly filled coaxial cylinder for O(103) revolutions. The axial bands demonstrate steady back-and-forth motion along the axis of rotation. Experimental findings indicated that these axial band dynamics are driven by global convection throughout the system. The essential features of the spatiotemporal dynamics are reproduced with a simple phenomenological equation that incorporates the effect of global convection.

Original languageEnglish
Article number010201
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume91
Issue number1
DOIs
Publication statusPublished - Jan 7 2015
Externally publishedYes

Fingerprint

Coaxial
Granular Materials
granular materials
Binary
Convection
Rotating
convection
rotating cylinders
axes of rotation
agitation
shaking
Coarsening
Segregation
Monotonic
Oscillation
oscillations
Motion
Demonstrate

All Science Journal Classification (ASJC) codes

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Condensed Matter Physics

Cite this

Steadily oscillating axial bands of binary granules in a nearly filled coaxial cylinder. / Inagaki, Shio; Ebata, Hiroyuki; Yoshikawa, Kenichi.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 91, No. 1, 010201, 07.01.2015.

Research output: Contribution to journalArticle

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