Advertisement

Side wall effects in Rayleigh Bénard experiments

  • P.-E. Roche
  • B. Castaing
  • B. Chabaud
  • B. Hébral
  • J. Sommeria

Abstract:

In Rayleigh Bénard experiments, the side wall conductivity is traditionally taken into account by subtracting the empty cell heat conductivity from the measured one. We present a model showing that the correction to apply could be considerably larger. We compare to experiments and find good agreement. One of the consequences is that the Nusselt behavior for Ra < 1010 could be closer to NuRa1/3 than currently assumed. Also, the wall effect can appear as a continuous change in the γ exponent NuRaγ.

PACS. 47.27.Te Convection and heat transfer – 44.25.+f Natural convection – 67.90.+z Other topics in quantum fluids and solids; liquid and solid helium 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© EDP Sciences, Springer-Verlag 2001

Authors and Affiliations

  • P.-E. Roche
    • 1
  • B. Castaing
    • 1
  • B. Chabaud
    • 1
  • B. Hébral
    • 1
  • J. Sommeria
    • 2
  1. 1.Centre de Recherches sur les Très Basses Températures, BP 166, 38042 Grenoble Cedex 9, FranceFR
  2. 2.LEGI - Plateforme Coriolis, 21 avenue des Martyrs, 38000 Grenoble, FranceFR

Personalised recommendations