UDC 536.24

R. Kandasamy1), I. Muhaimin1), 
P. Puvi Arasu2), and P. Loganathan2)

HOMOTOPY ANALYSIS METHOD FOR CHEMICAL REACTION AND THERMOPHORESIS
EFFECTS ON HEAT AND MASS TRANSFER FOR MHD HIEMENZ FLOW
OVER A POROUS WEDGE IN THE PRESENCE OF HEAT RADIATION

An analytical technique, namely, the homotopy analysis 
method, is applied to analyze the effect of chemical reaction and 
thermophoresis particle deposition on the MHD mixed convective heat 
and mass transfer for a Hiemenz flow over a porous wedge in the presence 
of heat radiation. The fluid is assumed to be viscous and incompressible. 
Analytical and numerical calculations are carried out for different 
values of dimensionless parameters, and an analysis of the results 
obtained shows that the flow field is influenced appreciably by the 
buoyancy ratio as well as by the thermal diffusion and suction/injection 
parameters. The effects of these parameters on the process characteristics 
are investigated methodically, and typical results are illustrated. 
An explicit, totally analytical, and uniformly valid solution is derived 
which agrees well with numerical results.

Keywords: buoyancy ratio, magnetohydrodynamic mixed convection, 
thermophoresis, chemical reaction, heat radiation, Hiemenz flow, 
porous medium.

1)Computational Fluid Dynamics, FSSW, Universiti 
Tun Hussein Onn Malaysia, 86400 Johor, Malaysia; 1)School of 
Mathematics, Anna University, Chennai, TN, India; email: future990@gmail.com. 
Original article submitted April 29, 2009; revision submitted November 
11, 2010.