TY - JOUR
T1 - Free convection in a vertical, porous annulus with constant heat flux on the inner wall-experimental results
AU - Prasad, V.
AU - Kulacki, F. A.
AU - Kulkarni, A. V.
PY - 1986/5
Y1 - 1986/5
N2 - Steady-state natural convection in a concentric, tall, vertical annulus filled with saturated, porous media is experimentally studied when the inner wall is heated by applying a constant heat flux and the outer wall is isothermally cooled. Temperature profiles and heat transfer rates are obtained for two sets of aspect and radius ratios, A = 14.4, k = 3.5 and A = 11.08, k = 14. The use of several solid-fluid combinations indicates a divergent behavior by Nusselt vs Rayleigh number curves, as also reported by previous investigators. An analysis of present and previous experimental data shows that the Nusselt number for a given Rayleigh number decreases as the ratio of solid and fluid thermal conductivities increases and vice versa.
AB - Steady-state natural convection in a concentric, tall, vertical annulus filled with saturated, porous media is experimentally studied when the inner wall is heated by applying a constant heat flux and the outer wall is isothermally cooled. Temperature profiles and heat transfer rates are obtained for two sets of aspect and radius ratios, A = 14.4, k = 3.5 and A = 11.08, k = 14. The use of several solid-fluid combinations indicates a divergent behavior by Nusselt vs Rayleigh number curves, as also reported by previous investigators. An analysis of present and previous experimental data shows that the Nusselt number for a given Rayleigh number decreases as the ratio of solid and fluid thermal conductivities increases and vice versa.
UR - https://www.scopus.com/pages/publications/0022720109
UR - https://www.scopus.com/inward/citedby.url?scp=0022720109&partnerID=8YFLogxK
U2 - 10.1016/0017-9310(86)90123-7
DO - 10.1016/0017-9310(86)90123-7
M3 - Article
AN - SCOPUS:0022720109
SN - 0017-9310
VL - 29
SP - 713
EP - 723
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
IS - 5
ER -