Simulation of Thermo-Hydraulic Behavior of a Lid-Driven Cavity Considering Gas Radiation Effect and a Heat Generation Zone

This paper presents a numerical study on the influence of thermal radiation in a lid-driven square cavity filled with participating gases by considering a non-uniform heat generation zone inside the media. The fluid is treated as a gray, absorbing, emitting and scattering medium. The two-dimensional Cartesian coordinate system is used to solve the governing equations which are the conservations of mass, momentum and energy. Since the gas is considered as a radiating medium, besides the convective and conductive terms in the energy equation, the radiative term is also presented. The finite difference method has been adopted to solve the governing equations in transient form and the discrete ordinates method (DOM) is used for computation of the radiative heat flux distribution inside the participating media. The crucial influence of gas thermal radiation effect on the cavity thermo-hydrodynamic (THD) characteristics is thoroughly explored. Comparison between the present numerical results with theoretical data in literatures shows a good consistency.