Mixed Convection Boundary Layer Flow from a Solid Sphere with Newtonian Heating in a Micropolar Fluid

Salleh, M. Z.; Nazar, R.; Pop, I.

doi:https://doi.org/10.3814/2010/736039

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Volume 2010 | Article ID 736039 | https://doi.org/10.3814/2010/736039

Mixed Convection Boundary Layer Flow from a Solid Sphere with Newtonian Heating in a Micropolar Fluid

M. Z. Salleh,¹R. Nazar,²and I. Pop³

Received27 Sept 2009

Revised02 Dec 2009

Accepted28 Dec 2009

Published02 Mar 2010

Abstract

The steady mixed convection boundary layer flow from a solid sphere in a micropolar fluid, generated by Newtonian heating in which the heat transfer from the surface is proportional to the local surface temperature, is considered. The governing boundary layer equations are first transformed into a system of nondimensional equations via the non-dimensional variables, and then into nonsimilar equations before they are solved numerically using an implicit finite-difference scheme known as the Keller-box method. Numerical solutions are obtained for the skin friction coefficient, wall temperature and heat transfer coefficient, as well as the velocity and temperature profiles with several parameters considered, namely the mixed convection parameter, the material or micropolar parameter, and the Prandtl number.

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Copyright

Copyright © 2010 M. Z. Salleh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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