Investigation of the Effect of the Prandtl Number on the Local Properties of Low-Intensity Convection in a Rectangular Region Heated from Below

Local heat transfer and temperature separation in the presence of steady-state natural thermal convection in a rectangular region heated from below have been numerically studied for various Prandtl numbers. The local features of the low-intensity convection have been analyzed. The dependences of the local effects on the Grashof and Prandtl numbers have been obtained. The effect of the Prandtl number on the boundaries of the convection regimes has been estimated.