Particle Size and Spacing Effects on Convective Heat and Mass Transfer of a Nanofluid in Wavy Annulus

摘要

In this paper, we attempted to study the heat and mass transfer of nanofluid flowing into a horizontal annulus whose outer cylinder is sinusoidal. Graham, Jang and Choi proposed expressions were considered. Various phenomena such as magnetic parameter (M), gap of the annulus from inner cylinder to mean position of outer wavy surface (s), heat source parameter (Q_H), and Darcy parameter (1/D) are considered. The governing equations are solved by R-K sixth order and shooting methods. The enhancement of temperature is observed for reduction in gap of the annulus.