Laminar Natural Convection Heat Transfer in an Enclosure with Conducting Plates : Effect of Grashof Number on Unsteady Heat Transfer

Abstract

The effect of Grashof number, Gr, on two-dimensional unsteady laminar natural convection in a rectangular cell surrounded by a vertical hot wall, a vertical insulated wall, and two horizontal conducting plates has been studied numerically using the SIMPLER algorithm. For Gr ranging from 10³ to 10⁵, transient velocity and temperature distributions, and timewise variation of averaged Nusselt number on the hotwall have been compared with those for an ordinary cell which has a hot wall and three insulated walls.