Magnetohydrodynamics Natural Convection Inside an Annulus Equipped with Fins

Abstract

In this paper, magnetohydrodynamics natural convection inside an annulus equipped with fins is studied numerically. The impact of various parameters such as the angle of the fin, length of the fin, and the Hartmann number on the flow and heat transfer characteristics are studied. The governing equations are discretized using a finite volume technique at a fixed value of the Rayleigh number ([Formula: see text]), while the Hartmann number is in the range of 0–100. The results show that increasing the angle of the fin ([Formula: see text]) for a specific value of the fin length ([Formula: see text]) results in decreasing the heat transfer except [Formula: see text] due to some created small vortices. Moreover, the Nusselt number is reduced by increasing the Hartmann number. For all ranges of the Hartmann number from 0 to 100, the change in the Nusselt number is at maximum when [Formula: see text].