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Second law analysis for free convection in non-newtonian fluids over a horizontal plate embedded in a porous medium / W. A. Khan in Journal of heat transfer, Vol. 133 N° 5 (Mai 2011) 

Public ISBD [article]  in Journal of heat transfer > Vol. 133 N° 5 (Mai 2011) . - pp. [052601/1-7] Titre : Second law analysis for free convection in non-newtonian fluids over a horizontal plate embedded in a porous medium : prescribed surface temperature Type de document : texte imprimé Auteurs : W. A. Khan, Auteur ; Rama Subba Reddy Gorla, Auteur Année de publication : 2011 Article en page(s) : pp. [052601/1-7] Note générale : Physique Langues : Anglais (eng) Mots-clés : Second  law  Non-Newtonian  Horizontal  plate  Temperature  Porous Index. décimale : 536 Chaleur. Thermodynamique Résumé : Second law characteristics of heat transfer and fluid flow due to free convection of non-Newtonian fluids over a horizontal plate with prescribed surface temperature in a porous medium are analyzed. Velocity and temperature fields are obtained numerically using an implicit finite difference method under the similarity assumption and these results are used to compute the entropy generation rate Ns, irreversibility ratio Phi, and the Bejan number Be for both Newtonian and non-Newtonian fluids. The effects of viscous frictional parameter G, Rayleigh number Ra, temperature variation lambda, axial distance (x) on the dimensionless entropy generation rate Ns, and the Bejan number Be are investigated for Newtonian and non-Newtonian fluids and presented graphically. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Second law analysis for free convection in non-newtonian fluids over a horizontal plate embedded in a porous medium : prescribed surface temperature [texte imprimé] / W. A. Khan, Auteur ; Rama Subba Reddy Gorla, Auteur . - 2011 . - pp. [052601/1-7]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 133 N° 5 (Mai 2011) . - pp. [052601/1-7] Mots-clés : Second  law  Non-Newtonian  Horizontal  plate  Temperature  Porous Index. décimale : 536 Chaleur. Thermodynamique Résumé : Second law characteristics of heat transfer and fluid flow due to free convection of non-Newtonian fluids over a horizontal plate with prescribed surface temperature in a porous medium are analyzed. Velocity and temperature fields are obtained numerically using an implicit finite difference method under the similarity assumption and these results are used to compute the entropy generation rate Ns, irreversibility ratio Phi, and the Bejan number Be for both Newtonian and non-Newtonian fluids. The effects of viscous frictional parameter G, Rayleigh number Ra, temperature variation lambda, axial distance (x) on the dimensionless entropy generation rate Ns, and the Bejan number Be are investigated for Newtonian and non-Newtonian fluids and presented graphically. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]