Abstract
The double diffusive phenomena in solar pond were numerically studied at the Prandtl number Pr=6, the Lewis number Le=100, the Rayleigh number Ra=10^6 or 10^7 and the buoyancy ratio N=0 to 20 for a two-layer system which consists of a pure water (upper layer) and an aqueous solution (lower layer) with the heating from the entire bottom. The heat from the source on the bottom accumulates owing to thermal plumes in the lower layer efficiently in the case of both large buoyancy ratio and high Rayleigh number.
