Detailed numerical simulations of intrinsically unstable two-dimensional planar lean premixed hydrogen/air flames

Lean premixed hydrogen/air flames are characterized by subunity Lewis numbers and the strong influence of thermal-diffusive instability in addition to the omnipresent hydrodynamic instability caused by thermal expansion. Such intrinsically unstable flames acquire cellular structures that modify significantly their propagation dynamics. In this paper, numerical simulations with detailed chemistry and transport are used to study premixed...