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APS » Journals » Phys. Rev. E » Volume 54 » Issue 6
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Phys. Rev. E 54, R5901–R5904 (1996)

Large-scale flow properties of turbulent thermal convection

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S. Ciliberto*, S. Cioni, and C. Laroche
Ecole Normale Supérieure de Lyon, Laboratoire de Physique, CNRS URA No. 1325, 46, Allée d'Italie 69364 Lyon Cedex 07, France

Received 29 April 1996; published in the issue dated December 1996

The influence of large-scale flow on heat transport in turbulent thermal convection is experimentally investigated. Large-scale flow couples the upper and lower thermal boundary layers. This coupling produces a slow coherent oscillation of the temperature field and strongly influences the spatial distribution of temperature fluctuations. Moreover, when the large-scale flow is either suppressed or strongly modified no significant variation of the heat transport across the cell is observed.

© 1996 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevE.54.R5901
DOI:
10.1103/PhysRevE.54.R5901
PACS:
47.27.Te

*Also at Department of Physics, University of Florence, Florence, Italy.

 
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