Multiscale Modeling of Turbulence, Radiation, and Combustion Interactions in Turbulent Flames

Traditional modeling of radiative transfer in reacting ows has ignored turbulenceradiation interactions (TRI), due to di±culties caused by their inherent nonlinearities and their vast range of length scales and time scales. The state-of-the-art of modeling TRI is reviewed, and some results are presented, in which TRI are calculated from basic principles from the composition PDF method and from DNS calculations. The results show that, in turbulent jet ames, TRI are always of great importance, and that they are dominated by the correlation between the absorption coe±cient and the radiative Planck function.