Revision with unchanged content. The main topic of this work is the study of the equivalence ratio effect on flame stability and dynamics in premixed and partially premixed flames by means of an LES algorithm able to handle the entire range of combustion regimes, with no ad-hoc adjustable parameters and able to respond automatically to variations in the inflow conditions.

I. Porumbel was born in Lehliu-Gara, Romania, in 1968. He graduated in Aerospace Engr. from Politehnica Inst. of Bucharest in 1993 and earned a PhD. in combustion in 2006 from the School of Aerospace Enger., Georgia Inst. of Tech. (advisor Prof. S. Menon). He is currently working for the National Research Development Inst. COMOTI in Bucharest.