Two-dimensional transient radiative heat transfer using discrete ordinates method

The S-N discrete ordinates (DO) method is developed for the first time to solve transient radiative heat transfer in a two-dimensional rectangular enclosure with absorbing, emitting, and anisotropically scattering medium subject to diffuse and/or collimated laser irradiation. The transient DO method is used to solve several example problems and compared with the existing results and the Monte Carlo predictions. Good agreement between the transient DO solutions and other predictions is found. Finally, the transient DO method is applied to investigate the characteristics of short-pulsed laser radiation interaction and transport within biological tissues.