TY - JOUR
T1 - Development of laminar mixed convection in a vertical porous channel
AU - Hadim, A.
AU - Govindarajan, S.
PY - 1988
Y1 - 1988
N2 - A numerical study of mixed convection in a parallel-plate vertical channel filled with a fluid-saturated porous medium is performed using the Brinkman-Forchheimer-extended Darcy model. Detailed results of the evolution of mixed convection in the entrance region are reported for both the Darcian and the non-Darcian regimes, and for wide ranges of Darcy number, Reynolds number, and modified Grashof number based on permeability. The results indicate that as the Darcy number is decreased, while maintaining the modified Grashof number constant, there is a significant enhancement in heat transfer in the entry region. Due to inertia effects only, heat transfer decreases in the entrance region but increases in the fully developed region. In the Darcian regime, at high values of Re, the describing parameter is the Gr*/Re ratio, but at moderately low Re, axial conduction effects can be significant. The effects of the describing parameters on the hydrodynamic and thermal entry lengths are also reported.
AB - A numerical study of mixed convection in a parallel-plate vertical channel filled with a fluid-saturated porous medium is performed using the Brinkman-Forchheimer-extended Darcy model. Detailed results of the evolution of mixed convection in the entrance region are reported for both the Darcian and the non-Darcian regimes, and for wide ranges of Darcy number, Reynolds number, and modified Grashof number based on permeability. The results indicate that as the Darcy number is decreased, while maintaining the modified Grashof number constant, there is a significant enhancement in heat transfer in the entry region. Due to inertia effects only, heat transfer decreases in the entrance region but increases in the fully developed region. In the Darcian regime, at high values of Re, the describing parameter is the Gr*/Re ratio, but at moderately low Re, axial conduction effects can be significant. The effects of the describing parameters on the hydrodynamic and thermal entry lengths are also reported.
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M3 - Conference article
AN - SCOPUS:0024181740
SN - 0272-5673
VL - 105
SP - 145
EP - 153
JO - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
JF - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
T2 - Symbolic Computation in Fluid Mechanics and Heat Transfer
Y2 - 27 November 1988 through 2 December 1988
ER -