Effect of chemical reaction on heat and mass transfer by mixed convection flow about a sphere in a saturated porous media

A.M. Rashad (Department of Mathematics, Faculty of Science, South Valley University, Aswan, Egypt)
A.J. Chamkha (Manufacturing Engineering Department, The Public Authority for Applied Education and Training, Shuweikh, Kuwait)
S.M.M. El‐Kabeir (Department of Mathematics, Faculty of Science, South Valley University, Aswan, Egypt Department of Mathematics, College of Science, Al‐Kharj University, Al‐Kharj, Saudi Arabia)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Publication date: 17 May 2011

Abstract

Purpose

The purpose of this paper is to study the effects of chemical reaction on mixed convection flow along a sphere in non‐Darcian porous media.

Design/methodology/approach

The sphere surface is maintained at uniform temperature and species concentration for both cases of heated (assisting flow) and cooled (opposing flow) sphere. An appropriate transformation is employed and the transformed equations are solved numerically using an efficient implicit iterative tri‐diagonal finite difference method.

Findings

It is found that chemical reactions have significant effect on heat and mass transfer. Comparisons with previously published work are performed and the results are found to be in excellent agreement.

Originality/value

The paper is original and describes how a parametric study of the physical parameters was conducted and illustrates graphically a representative set of numerical results for the velocity, temperature, and concentration profiles, as well as the local skin‐friction coefficient, local wall temperature, and local wall concentration, to show interesting features of the solutions.

Keywords

Citation

Rashad, A., Chamkha, A. and El‐Kabeir, S. (2011), "Effect of chemical reaction on heat and mass transfer by mixed convection flow about a sphere in a saturated porous media", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 21 No. 4, pp. 418-433. https://doi.org/10.1108/09615531111123092

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Publisher

:

Emerald Group Publishing Limited

Copyright © 2011, Emerald Group Publishing Limited

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