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Titre :
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Second law analysis for free convection in non-newtonian fluids over a horizontal plate embedded in a porous medium : prescribed surface temperature (2011)
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Auteurs :
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W. A. Khan, Auteur ;
Rama Subba Reddy Gorla, Auteur
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Type de document :
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Article : texte imprimé
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Dans :
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Journal of heat transfer (Vol. 133 N° 5, Mai 2011)
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Article en page(s) :
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pp. [052601/1-7]
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Note générale :
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Physique
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Langues :
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Anglais
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Index. décimale :
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536 (Chaleur. Thermodynamique)
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Tags :
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Second law Non-Newtonian Horizontal plate Temperature Porous
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Résumé :
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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.
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DEWEY :
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536
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ISSN :
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0022-1481
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En ligne :
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http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode=strresults&sort=chron&maxdisp=25&threshold=0&pjournals=JHTRAO&pyears=2011&possible1zone=article&fromvolume=133&fromissue=5&OUTLOG=NO&sti=yes&viewabs=JHTRAO&key=DISPLAY&docID=2
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