STUDY OF THE TURBULENT NATURAL CONVECTION INSIDE A DIFFERENTIALLY HEATED SQUARE CAVITY

The turbulent natural convection inside a differentially heated square cavity has been studied numerically inthis paper. Special attention has been paid for the wall effect on the convection. The turbulent model has beenapplied a standard κ-ε two equations model and the two-dimensional Reynolds Averaged Navier–Stokes(RANS) equations are discredited with the second order upwind scheme. The SIMPLE algorithm, which isdeveloped using control volumes, is adopted as the numerical procedure. Calculations were performed for awide variation of Rayleigh number corresponding to different flow. The results reveal that with increasingRayleigh number, distributions of temperature and velocity show higher values at the wall region of thecavity. Comparison of numerical results with the experimental data available in the literature is satisfactory.