Abstract
The simulation of laminar flames consists of capturing the evolution of a very large number of species that may react within a broad range of time scales. It therefore results in a highly non-linear stiff numerical problem that requires large computational resources. In the present paper, an alternative approach for the simulation of unsteady premixed flames is proposed and is applied for simulating an excited laminar flame. The approach is to using a single scalar (i.e. a progress variable) on relatively coarse grids. The unresolved details of the flame structure are expressed in terms of the spatial filtering. A model that has originally been developed for Large Eddy Simulation is applied for the simulation of unsteady laminar flames. The ability of the present approach to represent the filtered flame structure is compared qualitatively to experimental data.
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