Experimental investigation of the stability of a turbulent diffusion flame in a gas turbine combustor

A review on combustion instabilities in energy generating devices utilizing oxyfuel combustion

“…Increasing hydrogen concentration from 0% to 50% in the CH 4 /H 2 fuel mixture resulted in an increase up to 15% in CO 2 concentration at blowoff. 93 Some of the available literature on static stability for oxyfuel flames that reported the effect of concentration of O 2 relative to that of CO 2 in the oxidizer mixture are summarized in Table 1. One of the most obvious gaps in the literature on oxyfuel combustion are studies dealing with H 2 O dilution instead of CO 2 dilution.…”

“…Similar to lean air combustion, hydrogen enrichment can be used to enhance the stability limit of CO 2 ‐diluted oxyfuel flame. Sanusi et al 92 and Said et al 93 studied experimentally the effect of hydrogen enrichment on CH 4 /O 2 flames in non‐premixed gas turbine model combustors. The results showed onset of static instability occurred at relatively higher CO 2 ‐dilution levels.…”

“…The results showed onset of static instability occurred at relatively higher CO 2 ‐dilution levels. Increasing hydrogen concentration from 0% to 50% in the CH 4 /H 2 fuel mixture resulted in an increase up to 15% in CO 2 concentration at blowoff 93 . Some of the available literature on static stability for oxyfuel flames that reported the effect of concentration of O 2 relative to that of CO 2 in the oxidizer mixture are summarized in Table 1.…”

Thermoacoustic combustion instability of propane‐oxy‐combustion with CO2dilution: Experimental analysis

“…48,49 The authors of this article, could not so far, identify any study in the literature that evaluates the thermoacoustic stability of propane oxy-flames diluted with CO 2 in a non-premixed combustor. Depending on the CO 2 dilution level in oxyfuel combustion, the flames are reported to exhibit varying macrostructures.…”

“…Depending on the CO 2 dilution level in oxyfuel combustion, the flames are reported to exhibit varying macrostructures. 48,49 The authors of this article, could not so far, identify any study in the literature that evaluates the thermoacoustic stability of propane oxy-flames diluted with CO 2 in a non-premixed combustor. This aim of this study is to bridge this gap and enhance the existing literature on oxy-combustion particularly as it relates to thermoacoustic stability.…”