Journal
AIN SHAMS ENGINEERING JOURNAL
Volume 7, Issue 2, Pages 755-765Publisher
ELSEVIER
DOI: 10.1016/j.asej.2015.06.010
Keywords
Constant vortex viscosity; Micropolar fluid; Modified Boussinesq approximation; Thermophoresis; Variable viscosity; Vertical surface through binary mixture
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The problem of unsteady convective with thermophoresis, chemical reaction and radiative heat transfer in a micropolar fluid flow past a vertical porous surface moving through binary mixture considering temperature dependent dynamic viscosity and constant vortex viscosity has been investigated theoretically. For proper and correct analysis of fluid flow along vertical surface with a temperature lesser than that of the free stream, Boussinesq approximation and temperature dependent viscosity model were modified and incorporated into the governing equations. The governing equations are converted to systems of ordinary differential equations by applying suitable similarity transformations and solved numerically using fourth-order Runge-Kutta method along with shooting technique. The results of the numerical solution are presented graphically and in tabular forms for different values of parameters. Velocity profile increases with temperature dependent variable fluid viscosity parameter. Increase of suction parameter corresponds to an increase in both temperature and concentration within the thin boundary layer. (C) 2015 Faculty of Engineering, Ain Shams University. Production and hosting by Elsevier B.V.
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