Natural thermogravitational convection in a partially blocked square area heated from below: Local and medium heat transfer

The results of a numerical study of the local and average heat transfer during the natural thermal convection of air in a square-shaped area with two symmetrical horizontal partitions (fins) in the middle of the sides are presented. The region is heated from below by a constant uniform heat flow, the horizontal boundaries and partitions are assumed to be adiabatic, and the upper boundary is assumed to be isothermal. The dependences of the local and average Nusselt numbers on the size of the partitions and the intensity of the convective flow are obtained.