Turbulent Mixed Convection-Radiation Interactions in a Cavity

Two-dimensional turbulent mixed convection-surface radiation interaction phenomenon in a back-wall-heated open square cavity is numerically investigated. The flow medium is air, and the turbulence model used is the Low-Reynolds-Number κ-ε Scheme. Calculations have been performed for Grashof numbers Gr up to 10. And the Richardson number Ri covers a range of 4×10-45. It is shown that within a rather extensive range of Ri, the effects of radiation on the heat transfer and fluid flow in the cavity are significant, should not be neglected and become stronger with the increase of Ri and Gr.