G-Jitter Induced Natural Convection Nanofluid Flow with Mass Transfer in The Stagnation Point Region of a Three Dimensional Body

Abstract

Abstract The laminar flow near a stagnation point at the boundary layer is studied numerically in this paper. Viscous nanofluid with copper nanoparticles is considered in microgravity environment. The problem is described in term of mathematical formulation and the nanofluid studies is focusing on the volume fraction of the nanoparticles. After going through Boundary Layer and Boussinesq approximations, the dimensional governing equation is then transformed into dimensionless governing equation by using semi-similar transformation technique together with its initial and boundary conditions. In a way to solve the coupled dimensionless equations, implicit finite different method known as Keller-box methid is used in studying the transportation phenomena in terms of physical quantities of physical interest which are skin frictions that describe the flow behaviour, Nusset number represent the heat transfer coefficient and Sherwood number that refer to concentration distribution. It is found that stagnation point parameter which is curvature ratio, provide a different type of nanofluid flow cases. On the other hand, with the presence of g jitter which correspond to the microgravity environment, the parameter frequency of oscillation effects the convergence of the problem which the convergence occurs more frequently with bigger frequency. The enhancement of thermal conductivity is found by comparing the result of conventional fluid with nanofluid.