THE ROLE OF ACOUSTICS IN FLAME VORTEX INTERACTIONS

The role of acoustics in flame/vortex interactions is examined via asy mptotic analysis and numerical simulation. The model consists of a one -step, irreversible Arrhenius reaction between initially unmixed speci es occupying adjacent half-planes which are allowed to mix and react b y convection and diffusion in the presence of an acoustic field or a t ime-varying pressure field of small amplitude. The main emphasis is on the influence of the acoustics on the ignition time and flame structu re as a function of vortex Reynolds number and initial temperature dif ferences of the reactants.