In this study, the effect of hydrogen mixing rate on combustion instability in annular combustors was investigated. When hydrogen was mixed in the annular combustor, the longitudinal instability with the equivalent ratio was confirmed. To this end, pr...
In this study, the effect of hydrogen mixing rate on combustion instability in annular combustors was investigated. When hydrogen was mixed in the annular combustor, the longitudinal instability with the equivalent ratio was confirmed. To this end, pressure and heat release data were obtained, and through FFT analysis, the condition where combustion instability occurs was identified. The present research shows that combustion instability increased as the equivalent ratio increased at lean premixed condition.