Investigation of turbulent heat transfer in a closed rectangular area with thermally conductive enclosure structures in conditions of radiant heating of internal boundaries

Abstract

Mathematical modeling of conductive - convective heat transfer in a closed rectangular area with thermally conductive enclosure structures in conditions of radiant heating of internal boundaries is passed. The fields of temperature and stream functions for the two possible descriptions of the radiant energy distribution (even distribution of heat flow only along the lower horizontal boundary and the Lambert's law radiant energy distribution along vertical inner surfaces) are obtained. It is established that the absorption of radiant fluxes by vertical enclosure structures radiant flux increases the temperature gradients in the characteristic sections. Scale of the influence of turbulence on the flow rate of heat transfer is showed.

Keywords

• conjugate heat transfer
• numerical simulation
• turbulence
• thermogravitational convection
• baldwin - lomax model
• gas infrared emitter