https://doi.org/10.1007/s10051-001-8690-5
Side wall effects in Rayleigh Bénard experiments
1
Centre de Recherches sur les Très Basses Températures, BP 166, 38042 Grenoble Cedex 9, France
2
Laboratoire de Physique de la Matière Condensée, E.N.S., 24 rue Lhomond, 75231 Paris Cedex 05, France
3
École Normale Supérieure de Lyon, 46 Allée d'Italie, 69364 Lyon Cedex 07, France
4
LEGI - Plateforme Coriolis, 21 avenue des Martyrs, 38000 Grenoble, France
Corresponding author: a Philippe.Roche@lpmc.ens.fr
Revised:
1
October
2001
Published online: 15 December 2001
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 
could be closer
to 
than currently assumed. Also, the wall effect can
appear as a continuous change in the γ exponent 
.
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
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2001
