Combustion Science and Technology, Vol.180, No.5, 785-795, 2008
Study of the flame-burning velocity ratio using PDF Monte Carlo model
Various experimental and DNS data show that the interaction between turbulence and chemistry seriously affects the turbulent flame velocity ratio evolution. In this article, we have simulated turbulent premixed and stabilized flame growing in adiabatic combustion chamber in one-dimensional case. The turbulence is supposed to be isotropic and homogeneous. The chemistry is a single-stage scheme obeying Arrhenius law. The numerical simulation is based on the evolution PDF that uses Monte Carlo particle solver. We have emphasized on the turbulent flame-burning velocity ratio St/SL evolving versus respectively u'/SL and (u'/SL)Da1/4. We have found that the flame-burning velocity shows a linear tendency in consent with Damkhler's limit model, Zimont-Liptanikov's model and with experimental data by Glder et al. for moderate turbulence intensity. However, our simulation result shows a notable disagreement with some models as the one by Peters.