| Titre : | Mixed convective heat transfer past a heated square porous cylinder in a horizontal channel with varying channel height (2011) |
| Auteurs : | Horng-Wen Wu, Auteur ; Ren-Hung Wang, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Journal of heat transfer (Vol. 133 N° 2, Fevrier 2011) |
| Article en page(s) : | pp. [022503/1-10] |
| Note générale : | Physique |
| Langues : | Anglais |
| Index. décimale : | 536 (Chaleur. Thermodynamique) |
| Tags : | Heat transfer Square porous cylinder Buoyancy Darcy number Channel-to-cylinder height ratio |
| Résumé : |
The laminar mixed convection flow across the porous square cylinder with the heated cylinder bottom at the axis in the channel has been carried out numerically in this paper using a semi-implicit projection finite element method. The governing equations with the Brinkman–Forcheimer-extended Darcy model for the region of square porous cylinder were solved. The parameter studies including Grashof number, Darcy number, and channel-to-cylinder height ratio on heat transfer performance have been explored in detail. The results indicate that the heat transfer is augmented as the Darcy number and channel-to-cylinder height ratio increase. The buoyancy effect on the local Nusselt number is clearer for B/H=0.1 than for B/H=0.3 and B/H=0.5.
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| DEWEY : | 536 |
| ISSN : | 0022-1481 |
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