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Axisymmetric Stagnation-Point Flow of Nanofluid Over a Stretching Surface

Published online by Cambridge University Press:  03 June 2015

M. Nawaz  and
T. Hayat
M. Nawaz*
Affiliation:
Department of Humanities and Sciences Institute of Space Technology, P.O. Box 2750, Islamabad 44000, Pakistan
T. Hayat
Affiliation:
Department of Mathematics, Quaid-i-Azam University 45320 Islamabad 44000, Pakistan Department of Mathematics, Faculty of Sciences, King Abdulaziz University, Jeddah 80253, Saudi Arabia
*
*Corresponding author. Email: nawaz_d2006@yahoo.com
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Abstract

This paper investigates the laminar boundary layer flow of nanofluid induced by a radially stretching sheet. Nanofluid model exhibiting Brownian motion and thermophoresis is used. Series solutions for a reduced system of nonlinear ordinary differential equations are obtained by homotopy analysis method (HAM). Comparative study between the HAM solutions and previously published numerical results shows an excellent agreement. Velocity, temperature and mass fraction are displayed for various values of parameters. The local skin friction coefficient, the local Nusselt number and the local Sherwood number are computed. It is observed that the presence of nanoparticles enhances the thermal conductivity of base fluid. It is found that the convective heat transfer coefficient (Nusselt number) is decreased with an increase in concentration of nanoparticles whereas Sherwood number increases when concentration of nanoparticles in the base fluid is increased.

Keywords

76D1080A20Nanofluidaxisymmetric flowstagnation pointNusselt numberSherwood number
Type
Research Article
Information
Advances in Applied Mathematics and Mechanics , Volume 6 , Issue 2 , April 2014 , pp. 220 - 232
Copyright
Copyright © Global-Science Press 2014

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