Nanoparticle size effect on the convective heat transfer of a nanofluid flow inside a microchannel

M. Kalteh, A. Abassi, M. Saffar-Avval, J.D.R. Harting

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

This paper aims to study the nanoparticle size effect on the heat transfer enhancement for a copper-water nanofluid flow inside an isothermally heated microchannel using the two-phase approach. To do this, the governing equations for base liquid and nanoparticle phase are solved numerically. The two-phase results show higher heat transfer enhancements in comparison to the homogeneous modeling results. Also, it has been observed that the relative velocity and temperature between the phases is negligible and the nanoparticles distribute in the base liquid evenly. For lower volume concentrations, base liquid contributes more than the nanoparticle in the heat transfer but, for higher volume concentrations, the nanoparticle contribution is dominant. Heat transfer enhancement increases with a decrease in the nanoparticle size. The effect of the nanoparticle size on the heat transfer enhancement is more pronounced for higher volume concentrations.
Original languageEnglish
Title of host publicationProceedings of XXVIII Congresso UIT sulla Trasmissione del Calore, 21-23 June 2010, Brescia, Italy
EditorsM. Pilotelli, G.P. Beretta
Place of PublicationBrescia, Italy
PublisherCartolibreria SNOOPY s.n.c.
Pages305-310
ISBN (Print)978-88-89252-14-7
Publication statusPublished - 2010
Eventconference; 28th UIT Heat Transfer Congress; 2010-06-21; 2010-06-23 -
Duration: 21 Jun 201023 Jun 2010

Conference

Conferenceconference; 28th UIT Heat Transfer Congress; 2010-06-21; 2010-06-23
Period21/06/1023/06/10
Other28th UIT Heat Transfer Congress

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