volume 160, issue 9, P1779-1788 2013
DOI: 10.1016/j.combustflame.2013.03.014
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Abstract: International audienceHeat release rate fluctuations cause recurrent problems in many steady operating combustors. Direct measurements are difficult and these fluctuations are generally inferred from optical diagnostics. An alternative acoustic method was recently developed and is validated here in the case of unconfined laminar premixed flames submitted to harmonic flow modulations. The technique relies on determining the transmission time of frequency-modulated ultrasounds propagating through the perturbed f…

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