Simulation and modeling of reactive shear layers (Q1331363)

Numerical simulation is used to study the structure and dynamics of a spatially growing reactive mixing layer. It is assumed that the chemistry is infinitely fast and that it may be modeled by a single-step irreversible reaction. The analysis also relies on thermodiffusive approximation in which the heat released by the chemical reaction does not influence the flow. Calculations performed for a range of values of the global equivalence ratio indicate how the flame evolves as a function of the chemical composition of the two streams. Results of simulations are compared with those of a local model describing the flame elements (the flamelets) that form the flame.