Variability Effects on MHD for Blasius and Sakiadis Flows in the
Presence of Dufour and Soret about a Flat Plate
Abstract
A study is considered to a steady, two-dimensional boundary layer flow
of an incompressible MHD fluid for the Blasius and Sakiadis flows about
a flat plate in the presence of thermo-diffusion (Dufour) and
thermal-diffusion (Soret) effects for variable parameters. The governing
partial differential equations are transformed into a system of
nonlinear ordinary differential equations using similarity variables.
The transformed systems are solved numerically by Runge-Kutta Gills
method with shooting techniques. The variations of the flow velocity,
temperature and concentration as well as the characteristics of heat and
mass transfer are presented graphically with tabulated results. The
numerical computations show that thermal boundary layer thickness is
found to be increased with increasing values of Eckert number (Ec),
Prandtl number (Pr) and local Grashof number (Gr_x) for both Blasius
and Sakiadis flow. The Blasius flow elevates the thickness of the
thermal boundary layer compared with the Sakiadis flow. The local
magnetic field has shown that flow is retarded in the boundary layer but
enhances temperature and concentration distributions.