Journal
ALEXANDRIA ENGINEERING JOURNAL
Volume 53, Issue 3, Pages 737-745Publisher
ELSEVIER
DOI: 10.1016/j.aej.2014.05.002
Keywords
Nanofluid; Heat and mass transfer; Stretching sheet; Thermal radiation
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Funding
- UGC, Government of India under the scheme of UGC-BSR research fellowship
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This paper investigates the unsteady boundary layer flow of a nanofluid over a heated stretching sheet with thermal radiation. The transport model employed includes the effects of Brownian motion and thermophoresis. The unsteadiness in the flow field is caused by the time-dependence of the stretching velocity, free stream velocity and the surface temperature. The unsteady boundary layer equations are transformed to a system of non-linear ordinary differential equations and solved numerically using a shooting method together with Runge-Kutta-Fehlberg scheme. The clear liquid results from this study are in agreement with the results reported in the literature. It is found that the heat transfer rate at the surface increases in the presence of Brownian motion but reverse effect occurs for thermophoresis. (C) 2014 Production and hosting by Elsevier B.V. on behalf of Faculty of Engineering, Alexandria University.
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