Combined thermal stratified and thermal radiation effects in mixed-convection flow of a thixotropic fluid

S. A. Shehzad; M. Qasim; A. Alsaedi; T. Hayat; M. S. Alhothuali

doi:10.1140/epjp/i2013-13007-3

EPJ

Combined thermal stratified and thermal radiation effects in mixed-convection flow of a thixotropic fluid

S. A. Shehzad¹^*, M. Qasim², A. Alsaedi³, T. Hayat¹^,3 and M. S. Alhothuali³

¹ Department of Mathematics, Quaid-i-Azam University, 44000, Islamabad, Pakistan
² Department of Mathematics, Comsats Institute of Information Technology, Park Road, 44000, Islamabad, Pakistan
³ Department of Mathematics, Faculty of Science, King Abdulaziz University, 21589, Jeddah, Saudi Arabia

Received: 23 October 2012
Revised: 25 November 2012
Accepted: 20 December 2012
Published online: 22 January 2013

Abstract

This article addresses the mixed-convectionflow of a thixotropic fluid over a linearly stretching surface. Thermal stratified effects are taken into account in the presence of thermal radiation. Governing partial differential equations are first reduced into the ordinary differential equations and then solved for the homotopic solutions. Graphs to the obtained expressions are sketched for different parameters. Numerical values of skin-friction coefficient and local Nusselt number are computed with and without thermal stratified effects in viscous and non-Newtonian fluids.