TITLE:
MHD Mass Transfer Flow past a Vertical Porous Plate Embedded in a Porous Medium in a Slip Flow Regime with Thermal Radiation and Chemical Reaction
AUTHORS:
Nazibuddin Ahmed, Kishor Kumar Das
KEYWORDS:
Porous Medium; Slip Flow; Rarefaction; Viscous Drag; Free Convection
JOURNAL NAME:
Open Journal of Fluid Dynamics,
Vol.3 No.3,
September
18,
2013
ABSTRACT:
This
problem presents the effects of thermal radiation and chemical reaction on MHD
unsteady mass transfer flow past a semi-infinite vertical porous plate embedded
in a porous medium in a slip flow regime with variable suction. A magnetic field of uniform strength is assumed to be
applied transversely to the direction of the main flow. Perturbation technique
is applied to transform the non-linear coupled governing partial differential
equations in dimensionless form into a system of ordinary differential
equations. The resulting equations are solved analytically and the solutions
for the velocity, temperature and concentration fields are obtained. The
effects of various flow parameters on velocity, temperature and concentration fields are presented
graphically. For different values of the flow parameters involved in the
problem, the numerical calculations for the Nusselt number, Sherwood number and
skin-friction co-efficient at the plate are performed in tabulated form. It is
seen that chemical reaction causes the velocity field and concentration field
to decrease and the chemical reaction decreases the rate of viscous drag at the
plate.