Natural Convection Between Eccentric,
Horizontal Porous Cylinders
Author(s)
J.P. Barbosa Mota & E. Saatdjian
Abstract
Natural convection between eccentric,
horizontal porous cylinders
J.P. Barbosa Mota & E. Saatdjian*
ENSIC-LSGC, 1 Rue Grandville, B.P. 451,
54001 Nancy Cedex, France
ABSTRACT
Natural convection in a saturated porous medium bounded by two hori-
zontal eccentric cylinders is studied numerically by solving the governing
Darcy-Boussinesq equations using finite differences on a very fine grid. For
moderately high values of the Rayleigh number Ra, there exists an opti-
mum value of the eccentricity ratio e for which the total heat transfer is
minimized. The very accurate code presented here is not limited to low or
moderate Rayleigh numbers, and could be useful to study some interest-
ing flow characteristics, such as bifurcation phenomena and multi-cellular
regimes, for the higher Rayleigh numbers.
INTRODUCTION
Natural convection in porous cylindrical annuli is the principal mode of
heat transfer in numerous applications such as the insulation of either an
aircraft
Keywords
Related Book
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