摘要
针对等离子放电生成O_(3)对燃烧稳定性的复杂影响,基于数值模拟方法研究了不同O_(3)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,O_(3)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;O_(3)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NO_(2),而N2O中间体机理对O_(3)的影响不敏感。
Considering the complex effects of O_(3)generated 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 O_(3)concentrations.The results show that the oxidation zone moves forward due to the oxida⁃tion of O_(3),and the flame will develop in the upward direction to improve the combustion stability.The exist⁃ing of O_(3)can 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 NO_(2)in the low-temperature combustion zone.However,N2O intermediate mechanism is not sensitive to O_(3)addition.
作者
徐琛
孙继昊
赵宁波
XU Chen;SUN Ji-hao;ZHAO Ning-bo(AVIC China Aero-Polytechnology Establishment,Beijing 100028,China;Harbin Engineering University,College of Power and Energy Engineering,Harbin 150001,China)
出处
《燃气涡轮试验与研究》
2021年第1期27-33,共7页
Gas Turbine Experiment and Research
