Effect of N2 dilution and preheat temperature on combustion dynamics of syngas in a reverse-flow combustor

The present study investigates the combustion dynamics of low-calorific value syngas in the reverse-flow configuration at P = 1 atm using OH* chemiluminescence (5 kHz), noise (50 kHz), and emissions (NOx and CO) measurements. The combustion dynamics have been investigated as a function of the global equivalence ratio (0.32–0.89), percentage O2 in the coflow (7.6–21%), and the oxidizer preheat temperature (~400–800 K). The variation of these...