Investigation on flashback propensity of fuel blends: Oscillation effect

TL;DRAbstract

The primary objective of the proposed research was to develop fundamental understanding of the flashback propensity of syngas at different compositions. Through experimental measurements the proposed study generated critical boundary velocity gradient maps of different compositions of syngas with or without the presence of combustion oscillation. The influence of mixture composition and combustion oscillation (externally driven) on the flashback propensity was quantified. Of special interest of the project was to understand the effect of higher concentrations of hydrogen in syngas on flashback. The report presents the effects of composition and external excitation on the flashback propensity of hydrocarbon (methane-propane and methane-ethane) and hydrogen (carbon monoxide-hydrogen and methane-hydrogen) fuel blends. The flashback propensity of hydrocarbon fuel blends generally correlates with the flame velocity and stoichiometry of the fuel mixtures. The flashback propensity of hydrocar

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