Journal
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
Volume 39, Issue 8, Pages 1086-1092Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.icheatmasstransfer.2012.06.003
Keywords
Mixed convection; Heat transfer; Channel; Nanoparticles; Analytical solutions
Categories
Funding
- National Natural Science Foundation of China [10972136, 50739004]
- Higher Education of China [20090073120014]
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In this paper, the fully developed mixed convection flow in a vertical channel filled with nanofluids is investigated. Analytical solutions for both the buoyancy-assisted and -opposed flow are obtained. Further analysis shows that the analytical solution for the opposing flow is only valid for a certain region of the Rayleigh number Ra in physical sense. Besides, the effects of the nanoparticle volume fraction phi on the temperature and the velocity distributions are then exhibited. It is confirmed that the nanoparticle volume fraction phi plays a key role for improving the heat and mass transfer characteristics of the fluids. (C) 2012 Elsevier Ltd. All rights reserved.
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