Transient Radiative Heat Transfer in a Cubic Participating Medium Subjected to a Diffuse Square Pulse Train

Three-dimensional numerical computations were carried out to understand the overlap effect of the transmitted pulses in a cubic participating medium subjected to a diffuse square pulse train using the transient discrete ordinates method with the pulse boundary condition. In concrete terms, the effects of the pulse width and pulse train interval on the divergence of radiative heat flux were scrutinized for both optically thin and thick media. The transient characteristics of radiative heat transfer when the transmitted pulses were detected as distinct individual signals or as a single signal due to the overlap effect were elucidated by visualizing the transmitted pulses in a 3D medium continuously.