Thermophoresis and chemical reaction effects on non-Darcy mixed convective heat and mass transfer past a porous wedge with variable viscosity in the presence of suction or injection

Ismoen, Muhaimin and Kandasamy, Ramasamy and Ishak , Hashim and Kasmani, Ruhaila (2008) Thermophoresis and chemical reaction effects on non-Darcy mixed convective heat and mass transfer past a porous wedge with variable viscosity in the presence of suction or injection. Nuclear Engineering and Design, 238 (10). pp. 2699-2705. ISSN 00295493

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Abstract

The effects of variable viscosity, thermophoresis and non-Darcy mixed convection flow with heat and mass transfer over a porous wedge are presented here, taking into account the homogeneous chemical reaction of first order. The fluid viscosity is assumed to vary as an inverse linear function of temperature. Favorable comparison with previously published work is performed. The governing fundamental equations are approximated by a system of nonlinear ordinary differential equations and are solved numerically by using the Runge Kutta Gill and shooting methods. The steady-state velocity, temperature and concentration profiles are shown graphically. It is observed that due to the presence of first-order chemical reaction the concentration decreases with increasing values of the chemical reaction parameter. The results also showed that the particle deposition rates were strongly influenced by thermophoresis and buoyancy force, particularly for opposing flow and hot surfaces. Numerical results for the skin-friction coefficient, wall heat and mass transfer are obtained and reported graphically for various parametric conditions to show interesting aspects of the solution.

Item Type:Article
Subjects:T Technology > TJ Mechanical engineering and machinery > TJ255-265 Heat engines
Divisions:Faculty of Science, Technology and Human Development > Department of Science and Mathematics
ID Code:2351
Deposited By:M.Iqbal Zainal A
Deposited On:11 Mar 2013 17:47
Last Modified:11 Mar 2013 17:47

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