CO2 재순환에 의한 순산소 연소와 공기 연소의 화염 특성 비교
Investigation of Droplet Vaporizatio Phenomena in High Pressure Environments
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참고문헌
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초록
Steady Laminar Flamelet Model (SLFM) calculation is performed to compare the turbulent combustion characteristics of air combustion and oxy-combustion with CO2 recirculation. Radiative heat loss is considered by the optically thin limit assumption. For more realistic simulation the first-order conditional moment closure (CMC) model is applied to SANDIA PILOTED FLAME D again for the oxidants of air and mixture of O2 and CO2. The chemical kinetic mechanism for methane is GRI Mech 3.0. Results show that oxy flames are much more stable than air flames, while comparable stability is maintained with 65% CO2 recirculation. The comparable peak temperature is maintained with 80% CO2 recirculation. Higher the temperature, higher the fractions of intermediate species, CO and OH, due to dissociation.
Abstract
Steady Laminar Flamelet Model (SLFM) calculation is performed to compare the turbulent combustion characteristics of air combustion and oxy-combustion with CO2 recirculation. Radiative heat loss is considered by the optically thin limit assumption. For more realistic simulation the first-order conditional moment closure (CMC) model is applied to SANDIA PILOTED FLAME D again for the oxidants of air and mixture of O2 and CO2. The chemical kinetic mechanism for methane is GRI Mech 3.0. Results show that oxy flames are much more stable than air flames, while comparable stability is maintained with 65% CO2 recirculation. The comparable peak temperature is maintained with 80% CO2 recirculation. Higher the temperature, higher the fractions of intermediate species, CO and OH, due to dissociation.
참고문헌 (10)
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