Abstract
Investigation on Flue Gas Recirculation(FGR) flame and Fuel Injection Recirculation(FlR) flame was performed with numerical method Quantitative Reaction Path Diagram(QRPD) is utilized to compare the different chemistry effects between FGR flame and FIR flame In order to compare flamelets in various oxygen-enrichment conditions reasonably, the adiabatic flame temperature and Damkohler number were held fixed by modulating the amount of diluents to fuel and oxidizer stream and by varying global stram rate of flame respectively Basic flame structures were compared and characteristics of CH₄ decomposition and NO formation were analyzed based on QRPD analysis between FGR flame and FIR flame
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