volume 156, issue 12, P2252-2263 2009
DOI: 10.1016/j.combustflame.2009.08.004
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Abstract: a b s t r a c tThis study examines the effect of acoustic excitation using forced coaxial air on the flame characteristics of turbulent hydrogen non-premixed flames. A resonance frequency was selected to acoustically excite the coaxial air jet due to its ability to effectively amplify the acoustic amplitude and reduce flame length and NO x emissions. Acoustic excitation causes the flame length to decrease by 15% and consequently, a 25% reduction in EINO x is achieved, compared to coaxial air flames without ac…

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