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 language | English |
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Title of host publication | Proceedings of XXVIII Congresso UIT sulla Trasmissione del Calore, 21-23 June 2010, Brescia, Italy |
Editors | M. Pilotelli, G.P. Beretta |
Place of Publication | Brescia, Italy |
Publisher | Cartolibreria SNOOPY s.n.c. |
Pages | 305-310 |
ISBN (Print) | 978-88-89252-14-7 |
Publication status | Published - 2010 |
Event | conference; 28th UIT Heat Transfer Congress; 2010-06-21; 2010-06-23 - Duration: 21 Jun 2010 → 23 Jun 2010 |
Conference
Conference | conference; 28th UIT Heat Transfer Congress; 2010-06-21; 2010-06-23 |
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Period | 21/06/10 → 23/06/10 |
Other | 28th UIT Heat Transfer Congress |