Heat Transfer in a Parallelogram Shaped Enclosure : 3rd Report, Combined Free Convection and Radiation Heat Transfer

As the previous report has indicated, the main cause of the disagreement between calculated and experimental values is the effect of the radiation. In this report, the effect of the radiation on the convective heat transfer is investigated numerically. The same physical situation as the 2nd report is used for the calculation. Calculations are carried out by using the conditions of the experiments of the 2nd report and results are closely coincident with the experimental values. Calculations are also performed for aspect ratios 0.5 and 1, oblique angle π/3, distance between the hot and cold walls 0.01 to 0.04 m. The effects of the radiation on the convective heat transfer and the radiative heat transfer rate are made clear.