Periodic Boundary Motion in Thermal Turbulence

Jun Zhang, Albert Libchaber

Research output: Contribution to journalArticle

Abstract

A free-floating plate is introduced in a Bénard convection cell with an open surface. It partially covers the cell and distorts the local heat flux, inducing a coherent flow that in turn moves the plate. Remarkably, the plate can be driven to a periodic motion even under the action of a turbulent fluid. The period of the oscillation depends on the coverage ratio, and on the Rayleigh number of the convective system. The plate oscillatory behavior observed in this experiment may be related to a geological model, in which continents drift in a quasiperiodic fashion.

Original languageEnglish (US)
Pages (from-to)4361-4364
Number of pages4
JournalPhysical Review Letters
Volume84
Issue number19
StatePublished - May 8 2000

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turbulence
convection cells
continents
Rayleigh number
floating
heat flux
oscillations
fluids
cells

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Zhang, J., & Libchaber, A. (2000). Periodic Boundary Motion in Thermal Turbulence. Physical Review Letters, 84(19), 4361-4364.

Periodic Boundary Motion in Thermal Turbulence. / Zhang, Jun; Libchaber, Albert.

In: Physical Review Letters, Vol. 84, No. 19, 08.05.2000, p. 4361-4364.

Research output: Contribution to journalArticle

Zhang, J & Libchaber, A 2000, 'Periodic Boundary Motion in Thermal Turbulence', Physical Review Letters, vol. 84, no. 19, pp. 4361-4364.
Zhang J, Libchaber A. Periodic Boundary Motion in Thermal Turbulence. Physical Review Letters. 2000 May 8;84(19):4361-4364.
Zhang, Jun ; Libchaber, Albert. / Periodic Boundary Motion in Thermal Turbulence. In: Physical Review Letters. 2000 ; Vol. 84, No. 19. pp. 4361-4364.
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