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Coupling of vibro-acoustic waves with premixed flame
Phys. Rev. Fluids 4, 121201(R) – Published 24 December, 2019
DOI: https://doi.org/10.1103/PhysRevFluids.4.121201
Abstract
We investigate the coupling between a premixed flame freely propagating inside a Hele-Shaw burner and the mechanical vibrations of the burner structure. The combustion chamber deformations are not only able to damp the classical thermo-acoustic instabilities but they can also trigger a new oscillating combustion instability. We demonstrate that the flow oscillations induced by the burner vibrations can be used to control the shape of the flame surface, by damping the Darrieus-Landau dynamics, or by triggering Faraday-like waves.
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