Steady regime of a turbulent plane jet flowing into a rectangular hot cavity

Abstract

Turbulent heat transfer between a confined jet and the walls of a hot rectangular cavity is studied numerically by finite volume method using the k-ω SST one point closure turbulence model. The parameters considered in this study were the jet exit Reynolds number, the temperature difference between the cavity heated wall and the jet exit and the jet location inside the cavity. The flow structure predictions were in good agreement with the available experimental data. The maximum local heat transfer between the cavity walls and the flow occurred at the potential core end. The ratio between the stagnation point Nusselt numbers of the cavity bottom to the maximum Nusselt number on the lateral cavity wall decreased with the Reynolds number for all considered impinging distances. For a given lateral confinement, the stagnation Nusselt number of the asymmetrical interaction is almost equal to that of the symmetrical interaction.