volume 157, issue 9, P1800-1814 2010
DOI: 10.1016/j.combustflame.2010.05.008
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Abstract: a b s t r a c tAn investigation into the response of non-premixed swirling flames to acoustic perturbations at various frequencies (f p = 0-315 Hz) and swirl intensities (S = 0.09 and 0.34) is carried out. Perturbations are generated using a loudspeaker at the base of an atmospheric co-flow burner with resulting velocity oscillation amplitudes |u 0 /U avg | in the 0.03-0.30 range. The dependence of flame dynamics on the relative richness of the flame is investigated by studying various constant fuel flow rate…

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