THERMAL SIMULATION OF A TIME-DEPENDED LID-DRIVEN CAVITY WITH CONSIDERING A PARTICIPATING MEDIA

In this work, the paper focuses 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 Cartesiancoordinate 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 andconductive terms in the energy equation, the radiative term is also presented. The finite difference methodhas 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 thermal characteristics is thoroughly explored. Comparison between the present numerical results with theoretical data in literatures shows a good consistency

Keywords:

Thermal radiation , lid-driven cavity , heat generation zone , discrete ordinates method