Influence of turbulence on the thermal radiation transfer in diffusion hydrogen flames

The effect of the turbulent fluctuations of the temperature and concentrations in a diffusion hydrogen flame on its thermal radiation has been quantitatively estimated. The numerical investigations were carried out using the data on the laser probing of this flame. The coefficients of the radiation-transfer equation were determined by averaging instantaneous temperatures and concentrations, which made it possible to eliminate the errors introduced by model distribution functions. It is shown that the effect of the turbulence of a flame on its radiation determines, to a large extent, the formation of the thermal radiation fields of the flame.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 77, No. 6, pp. 146–151, November–December, 2004.