High-Pressure Ignition and Flame Propagation Measurements of CO2 Diluted Natural Gas/Oxidizer Mixtures for Advanced Rocket and Gas Turbine Combustors
AIAA Scitech 2020 Forum, 2020•arc.aiaa.org
Ignition of CO2 diluted hydrocarbon mixture were studied at initial pressure over 20 bar at
constant volume using high voltage CDI spark ignition. Ignition limit, flame images, and
flame speeds are reported in this paper. The effect of CO2 reduced the flame speed
significantly. Highly buoyant cellular flames were observed with high CO2 dilution.
Measured flame speeds with 25% CO2 were 7.07 cm/s at 20 bar, 429 K and 5.86 cm/s at 26
bar, 422 K.
constant volume using high voltage CDI spark ignition. Ignition limit, flame images, and
flame speeds are reported in this paper. The effect of CO2 reduced the flame speed
significantly. Highly buoyant cellular flames were observed with high CO2 dilution.
Measured flame speeds with 25% CO2 were 7.07 cm/s at 20 bar, 429 K and 5.86 cm/s at 26
bar, 422 K.
Ignition of CO2 diluted hydrocarbon mixture were studied at initial pressure over 20 bar at constant volume using high voltage CDI spark ignition. Ignition limit, flame images, and flame speeds are reported in this paper. The effect of CO2 reduced the flame speed significantly. Highly buoyant cellular flames were observed with high CO2 dilution. Measured flame speeds with 25% CO2 were 7.07 cm/s at 20 bar, 429 K and 5.86 cm/s at 26 bar, 422 K.
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