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Mixed Convection Flow of a Micropolar Fluid Past a Vertical Stretching Surface in a Thermally Stratified Porous Medium with Thermal Radiation

Published online by Cambridge University Press:  01 May 2013

Mostafa A.A. Mahmoud  and
Shimaa E. Waheed
Mostafa A.A. Mahmoud
Affiliation:
Department of Mathematics, Faculty of Science, Benha University, Egypt
Shimaa E. Waheed*
Affiliation:
Department of Mathematics, Faculty of Science, Benha University, Benha Taif Univesity, Taif, KSA
*
*Corresponding author (shimaa_ezat@yahoo.com)
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Abstract

This paper is concerned with the effect of thermally stratification on the steady, two-dimensional mixed convection flow of a micropolar fluid past a vertical stretching permeable surface saturated in porous medium taking into account the effect of thermal radiation. The governing system of partial differential equations describing the problem are converted into a system of non-linear ordinary differential equations using similarity transformation. The resulting system of coupled nonlinear ordinary differential equations is solved numerically using the Chebyshev spectral method. The numerical results for the velocity, the micro-rotation and the temperature are displayed graphically showing the effects of various parameters like the buoyancy parameter, the radiation parameter, the stratification parameter, the permeability parameter and the suction/injection parameter. Moreover, the numerical values of the local skinfriction coefficient, the wall couple stress and the local Nusselt number for these parameters are also tabulated and discussed.

Keywords

Micropolar fluidMixed convectionStretching plateThermally stratified porous mediumThermal radiation
Type
Articles
Information
Journal of Mechanics , Volume 29 , Issue 3 , September 2013 , pp. 461 - 470
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2013 

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