Numerical Study of Mixed Convection and Heat Transfer in Arc-Shaped Cavity with Inner Heat Sources

The mixed convection and heat transfer in enclosures with inner sources widely exist building ventilation, cooling of nuclear reactors electronic components. In this study, the characteristics an open arc-shaped cavity double under condition bottom heating top wall are studied by two-dimensional numerical simulation using ANSYS FLUENT. influence Reynolds number on flow structures, transient arc was changing inlet wind speed. As changes from 2.19 × 105 to 4.38 107, fully developed stage will evolve turbulent periodic then steady state flow. critical intervals for three different states given. increase enhances cavity. difference between conduction is increased, which has a linear relationship number. increases, removal capacity middle region not always enhanced, due sudden change structure around Re = 1.18 107.