Author/Authors :
Sreenadh S. نويسنده Department of Mathematics - Sri Venkateswara University , Rashidi M. M. نويسنده Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management Systems - Tongji University , Kumara Swamy Naidu K. نويسنده Department of Mathematics - Sree Vidyanikethan Engineering College , Parandhama A. نويسنده Department of Mathematics - Sree Vidyanikethan Engineering College
Abstract :
Free convective flow of a Jeffrey fluid in a vertical deformable porous stratum is investigated. It is assumed
that heat is generated within the fluid by both viscous and Darcy dissipations. The velocity, displacement and
the temperature distributions are evaluated using a perturbation method valid for small values of buoyancy
parameter N . The effects of Jeffrey parameter, (phi)f and (phi)s on the flow velocity and solid displacement are
discussed in detail. In the absence of Jeffrey parameter, deformable porous parameters and the pressure
gradient, all the results reduce to the corresponding results of Rudraiah et al. (1977). Higher skin friction is
observed for a given buoyancy force for a non-Newtonian Jeffrey fluid when compared with Newtonian fluid.
On comparing deformable and undeformable porous layers of present work and Rudraiah et al. (1977), we
conclude that the skin friction gets reduced when the porous material is a deformable one. It is noticed that
the effect of increasing Jeffrey parameter is to increase the skin friction in the deformable porous stratum.
