期刊
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
卷 50, 期 3, 页码 403-410出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ijthermalsci.2010.03.016
关键词
Heat transfer; Laminar flow; Mixed convection; Nanofluid; Nanoparticles; Al2O3-water mixture; Experimental study
资金
- Natural Sciences and Engineering Research Council of Canada
- Hydro Quebec
- Alcan International Ltd
- CANMETEnergy Technology Center
An experimental investigation was carried out to study mixed convection of Al2O3-water nanofluid inside an inclined copper tube submitted to a uniform wall heat flux at its outer surface. The effects of nanoparticles concentration and power supply on the development of the thermal field are studied and discussed under laminar flow condition. Results show that the experimental heat transfer coefficient decreases slightly with an increase of particle volume concentration from 0 to 4%. Two new correlations are proposed to calculate the Nusselt number in the fully developed region for horizontal and vertical tubes, for Rayleigh number from 5 x 10(5) to 9.6 x 10(5), Reynolds number from 350 to 900 and particle volume concentrations up to 4%. Crown Copyright (C) 2010 Published by Elsevier Masson SAS. All rights reserved.
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