Numerical analysis of natural convection in a triangular cavity with different configurations of hot wall

This computational work is exploited in an isosceles right triangular cavity to delineate the effect of different shapes of base hot wall i. e. smooth, triangular zig-zag (TZ) and caterpillar shape (CS) on natural convection cooling. The side and inclined wall of the enclosure is presumed as cold walls. The two dimensional mass, momentum and energy equations are solved by finite volume method based on SIMPLE algorithm. The results are drawn for different types of hot wall with varying aspect ratio (sigma) and Rayleigh number (10(5)-10(7)). From the investigation, it is found that the heat transfer rate is increased for both triangular zig-zag and caterpillar curve shape walls and with the increase of their aspect ratios but the maximum rate of heat transfer is obtained for caterpillar shape.