Effect of radiation on natural convection in an L-shaped corner

An experimental investigation of the interaction of surface radiation and n atural convection in an L shaped corner is presented. Parametric studies to explore the influence of surface emissivity and aspect ratio on the total heat transfer rate from the isothermal vertical wall of the L corner, have been carried out. For an L corner with highly polished walls, the present e xperimental results are compared with results available in literature, and are found to be in good agreement. A new semi-experimental method for solvi ng this class of problems is discussed, and a correlation for estimating th e total Nusselt number is proposed. It is found that surface radiation has a significant effect on the total heat transferred from the vertical wall o f the L-shaped corner.