Resumo

HINOJOSA PALAFOX, J.F.. Numerical study of the natural convection in a two-dimensional partially open tilted cavity. Lat. Am. appl. res. [online]. 2012, vol.42, n.3, pp. 267-274. ISSN 0327-0793.

In this paper the numerical results of temperature profiles and flow patterns for natural convection in a two-dimensional partially open tilted cavity are studied. The cavity holds the opposite wall to the aperture at a constant temperature, while the remaining walls are thermally insulated. The most important assumptions in the mathematical formulation are: the flow is laminar, two-dimensional and the Boussinesq approximation is valid. The results are obtained for Rayleigh numbers from 10⁶ to 10⁸ and inclination angles from 90° to 150°, for the steady state. The comparison between the Nusselt numbers of the fully open cavity and partially open cavity, indicates that the greatest difference is 55.4% (Ra=10⁸ and 135°) and the smallest difference is 4.6% (Ra=10⁶ and 90°), with an average percentage difference of 29%.

Palavras-chave : Natural Convection; Partially Open Cavity.