This study investigates a mixed convection boundary layer flow over a
vertical wall embedded in a highly porous medium. The fluid viscosity is
assumed to decrease exponentially with temperature. The boundary layer
equations are transformed into a non-similar form using an appropriate non-similar
variable ξand a
pseudo-similar variable η. The non-similar
equations are solved using an efficient local non-similarity method. The effect
of viscosity variation parameter on the heat transfer, skin friction and the
velocity and temperature distribution within the boundary layer is
investigated. The viscosity variation parameter, the viscous dissipation
parameter and non-simi-larity variable are shown to have a significant effect
on velocity and thermal boundary layer and also on the skin friction
coefficient and heat transfer at the wall.
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