Effect of particle migration on flow and convective heat transfer of nanofluids flowing through a circular pipe / M. M. Heyhat in Journal of heat transfer, Vol. 132 N° 6 (Juin 2010)  

Public ISBD [article]  inJournal of heat transfer > Vol. 132 N° 6 (Juin 2010) . - pp. [062401-1/9] Titre : Effect of particle migration on flow and convective heat transfer of nanofluids flowing through a circular pipe Type de document : texte imprimé Auteurs : M. M. Heyhat, Auteur ; F. Kowsary, Auteur Article en page(s) : pp. [062401-1/9] Note générale : Physique Langues : Anglais (eng) Mots-clés : Nonofluids Heat transfer Thermophoresis Brownian motion Nonuniform particle distribution Index. décimale : 536 Chaleur. Thermodynamique Résumé : This paper aims to study the effect of particle migration on flow and heat transfer of nanofluids flowing through a circular pipe. To do this, a two-component model proposed by Buongiorno (2006, “Convective Transport in Nanofluids,” ASME J. Heat Transfer, 128, pp. 240–250) was used and a numerical study on laminar flow of alumina-water nanofluid through a constant wall temperature tube was performed. The effects of nonuniform distribution of particles on heat-transfer coefficient and wall shear stress are shown. Obtained results illustrate that by considering the particle migration, the heat-transfer coefficient increases while the wall shear stress decreases, compared with uniform volume fraction. Thus, it can be concluded that the enhancement of the convective heat transfer could not be solely attributed to the enhancement of the effective thermal conductivity, and beside other reasons, which may be listed as this higher enhancement, particle migration is proposed to be an important reason. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Effect of particle migration on flow and convective heat transfer of nanofluids flowing through a circular pipe [texte imprimé] / M. M. Heyhat, Auteur ; F. Kowsary, Auteur . - pp. [062401-1/9]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 132 N° 6 (Juin 2010) . - pp. [062401-1/9] Mots-clés : Nonofluids Heat transfer Thermophoresis Brownian motion Nonuniform particle distribution Index. décimale : 536 Chaleur. Thermodynamique Résumé : This paper aims to study the effect of particle migration on flow and heat transfer of nanofluids flowing through a circular pipe. To do this, a two-component model proposed by Buongiorno (2006, “Convective Transport in Nanofluids,” ASME J. Heat Transfer, 128, pp. 240–250) was used and a numerical study on laminar flow of alumina-water nanofluid through a constant wall temperature tube was performed. The effects of nonuniform distribution of particles on heat-transfer coefficient and wall shear stress are shown. Obtained results illustrate that by considering the particle migration, the heat-transfer coefficient increases while the wall shear stress decreases, compared with uniform volume fraction. Thus, it can be concluded that the enhancement of the convective heat transfer could not be solely attributed to the enhancement of the effective thermal conductivity, and beside other reasons, which may be listed as this higher enhancement, particle migration is proposed to be an important reason. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]

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