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     Research Journal of Applied Sciences, Engineering and Technology


Radiation Effects on MHD Stagnation-Point Flow in a Nanofluid

1Mohammad Eftekhari Yazdi, 1Abed Moradi and 2Saeed Dinarvand
1Department of Mechanical Engineering, Central Tehran Branch, Islamic Azad University, Tehran, Iran
2Islamic Azad University, Central Tehran Branch, Young Researchers Club, Tehran, Iran
Research Journal of Applied Sciences, Engineering and Technology  2013  22:5201-5208
http://dx.doi.org/10.19026/rjaset.5.4265  |  © The Author(s) 2013
Received: August 15, 2012  |  Accepted: September 08, 2012  |  Published: May 25, 2013

Abstract

In this study, the two-dimensional Magnetohydrodynamic (MHD) boundary layer of stagnation-point flow in a nanofluid in the presence of thermal radiation is investigated. Using a similarity transform, the Navier-Stokes equations are reduced to a set of nonlinear ordinary differential equations. The similarity equations are solved numerically for three types of nanoparticles, namely copper (Cu), alumina (Al2O3) and titania (TiO2) in water as the base fluid. The skin-friction coefficient and Nusselt number as well as the velocity and temperature profiles for some values of the governing parameters are presented graphically and discussed. Effects of the nanoparticle volume fraction on the flow and heat transfer characteristics are thoroughly examined.

Keywords:

MHD, nanofluid nanoparticle volume fraction, stagnation-point flow, thermal radiation,


References


Competing interests

The authors have no competing interests.

Open Access Policy

This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Copyright

The authors have no competing interests.

ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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