Abstract
ABSTRACT Ignition processes in laminar counterflow configuration using both detailed and reduced chemistry based on the Reaction-Diffusion Manifolds (REDIM) method are investigated. We choose in this work: (i) ignition by hot gas and (ii) spark ignition. The temporal development of thermo-kinetic quantities (e.g. temperatures and species concentrations) are compared. It is demonstrated that the two-dimensional REDIM reduced chemistry is accurate enough to predict the time evolution of different thermo-kinetic quantities compared with the detailed solutions for flows perturbed by different strain rates. Furthermore, the two-dimensional REDIM model for the spark ignition process can reproduce values of the minimal ignition energy very well. This confirms the concept and quality of the REDIM reduced model, which can be then further applied for turbulent flame simulations.
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