Abstract
A numerical and experimental analysis is performed for oscillatory natural convection in a square box heated at the lower half and cooled at the upper half of the side wall. The temperature oscillation in the water is measured by the thermo-couples and compared with numerical results obtained by a finite difference method based on the HSMAC formulaion. The relationship between the Rayleigh number and the temperature frequency is obtained, and the influence of the distance between the heated wall and the cooled wall are investigated.
