Boualem Khouider
Assistant Professor
University of Victoria
The flamelet regime of turbulent premixed combustion is by definition when the reaction time and space scales are smaller than the Kolmogorov scale of turbulence. The principle role of turbulence, in this regime, is to wrinkle the front and hence enhance the speed of the large scale-mean front. In practice, the flame front is viewed as a moving interface separating the burned and the unburned gas. In this work, we use the asymptotic model of Majda and Souganidis to introduce a new strategy for large eddy simulations of premixed flames. A numerical validation is provided and a new method for computing Hamiltonians is introduced. Unambiguous answers to some important practical issues have been obtained. Especially, the bending effect known in turbulence is quantified for the first time.
This is a joint work with Anne Bourlioux and Andrew J. Majda.