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Article Dans Une Revue Combustion Science and Technology Année : 1999

Parametric Response of a Conical Flame to Acoustic Waves

Résumé

This paper reports experiments on initially quasi-conical premixed flames subjected to acoustic forcing of the cold gases with high amplitude and high frequency ( 1000 Hz). The resulting hemispherical-shaped flame, induced by a restabilization effect described previously by Durox et al., shows a parametric instability when stronger acoustic forcing is applied (the oscillating acceleration is typically about 1000g). In this case, the front exhibits unsteady cusp-shaped cells. These patterns oscillate with a period which is twice the acoustic period. This state is identified as the parametric response of a harmonic oscillator.
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Dates et versions

hal-00176889 , version 1 (04-10-2007)

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Françoise Baillot, Daniel Durox, Sébastien Ducruix, Geoffrey Searby, L. Boyer. Parametric Response of a Conical Flame to Acoustic Waves. Combustion Science and Technology, 1999, 142 (1-6), pp.91-109. ⟨10.1080/00102209908924190⟩. ⟨hal-00176889⟩
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