Journal
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
Volume 38, Issue 6, Pages 704-710Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.icheatmasstransfer.2011.04.002
Keywords
Microchannels; Nanofluid; Viscous heating; Heat transfer coefficient
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Funding
- CNCSIS-UEFISCSU [670 PNII-IDEI 938/2008]
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The numerical modeling of the conjugate heat transfer and fluid flow of Al2O3/water nanofluid through the micro-tube was presented in the paper. The laminar flow regime was considered along with viscous dissipation effect. The diameter ratio of the micro-tube was D-i/D-o=0.1/0.3 mm with a tube length L=100 mm. The heat transfer rate was fixed to Q=0.5 W with three different Br=0.1, 0.5 and 1. The water based Al2O3 nanofluid was considered with various volume concentrations of Al2O3 particles phi=1, 4, 6, 9% and two diameters of the particles D-p=10 nm and 47 nm. The analysis was performed on the results for local heat transfer coefficient. (C) 2011 Elsevier Ltd. All rights reserved.
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