摘要 针对等离子放电生成O3对燃烧稳定性的复杂影响,基于数值模拟方法研究了不同O3浓度条件下的甲烷/空气射流火焰形态和典型燃烧组分变化规律。结果表明,O3的强氧化性可以使燃烧反应氧化区提前,火焰向来流方向发展从而起到稳定燃烧的作用;O3的存在能够降低火焰后方的CO浓度,加快热力型NO和快速型NO的生成速率,促进低温燃烧区内NO被氧化为NO2,而N2O中间体机理对O3的影响不敏感。 Considering the complex effects of O3generated by plasma discharge on combustion stability,the numerical investigations were carried out to analyze the flame shape and species concentrations of CH4/air with different O3concentrations.The results show that the oxidation zone moves forward due to the oxida⁃tion of O3,and the flame will develop in the upward direction to improve the combustion stability.The exist⁃ing of O3can reduce the concentration of CO behind the flame,accelerate the generation rate of thermal NO and prompt NO,and promote the oxidation of NO to NO2in the low-temperature combustion zone.However,N2O intermediate mechanism is not sensitive to O3addition.
出处 《燃气涡轮试验与研究》 北大核心 2021年第1期27-33,共7页 Gas Turbine Experiment and Research
关键词 O3 射流火焰 燃烧稳定性 污染物 反应机理 数值模拟方法 O3 jet flame combustion stability pollutants reaction mechanism numerical simulation method
