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Natural convection heat transfer from an isothermal vertical surface to a fluid saturated thermally stratified porous medium

✍ Scribed by D. Angirasa; G.P. Peterson

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
638 KB
Volume
40
Category
Article
ISSN
0017-9310

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✦ Synopsis

Presented here are the results of a numerical study of natural convection heat transfer in a stably stratified, fluid saturated low porosity medium, in which Darcy flow prevails. In this investigation, the boundary layer approximations are discarded and a wide range of ambient thermal stratification levels is considered. The results indicate that the ambient thermal stratification has a significant effect on the flow and temperature fields, and that this effect differs considerably at higher levels of stratification.

The flow reversal and temperature defects are significantly smaller in the porous media than in a viscous fluid, due to the stabilization of the flow by the solid matrix. To generalize the result, the Nusselt number data are correlated with the thermal stratification parameter to yield a functional relationship.

πŸ“œ SIMILAR VOLUMES

Combined heat and mass transfer in natur
Combined heat and mass transfer in natural convection flow from a vertical wavy surface in a power-law fluid saturated porous medium with thermal and mass stratification
✍ Ching-Yang Cheng πŸ“‚ Article πŸ“… 2009 πŸ› Elsevier Science 🌐 English βš– 792 KB

This work studies the coupled heat and mass transfer by natural convection near a vertical wavy surface in a non-Newtonian fluid saturated porous medium with thermal and mass stratification. The surface of the vertical wavy plate is kept at constant wall temperature and concentration. A coordinate t