This paper, dedicated to Norbert Peters, follows his lead in developing theoretical
understanding of the complex flow-turbulence interactions occurring in the propagation of
premixed flames. The work is based on the asymptotic hydrodynamic model of premixed
flames, where the flame is modeled by a surface that separates unburned and burned gases
and propagates relative to the incoming flow at a speed that depends locally on the flame
stretch rate. As such the work may be categorized as corresponding to the “flamelet regime” …

Premixed flame propagation in two-dimensional turbulent flows is examined within the
context of a hydrodynamic model. The flame is treated as a surface of density discontinuity
and propagates against a turbulent flow of prescribed intensity and scale. A hybrid Navier-
Stokes/interface capturing technique is used to describe the flow field throughout the entire
domain and track the highly-fluctuating flame front which is allowed to attain folded
conformations and form pockets of unburned gases that detach from the main flame surface …