Scrutinization of unsteady non-Newtonian fluid flow considering buoyancy effect and thermal radiation: Tangent hyperbolic model

Abstract

The contemporary study is performed to evaluate the stagnation point flow and thermal features of tangent hyperbolic fluid over a vertical surface by implementing suitable rheological model. The considered fluid is presumed to be incompressible, viscous and non-Newtonian in nature. The physical situation is modeled by employing tangent hyperbolic fluid flow model. In addition to this the role of Soret and Dufour properties on non-Newtonian fluids are explored in this research work. The solutions are obtained via numerical computation. The influence of natural convection on non-Newtonian fluid flow is illustrated. Impact of different flow controlling constraints on flow and thermal distribution are scrutinized. The friction factor and heat transfer at the surface are analyzed for distinct parameters of physical interest. Outcomes for the Nusselt number and friction coefficient are offered using graphical illustration. This examination reveals the impact of buoyant force on non-Newtonian fluid flow. It is established that coefficient of skin friction enhances with buoyancy ratio parameter in assisting region and declines in opposing region. It is professed that the Nusselt number intensified with Dufour effect.