The combustion enhancement by ozone has been studied for single-component fuels in many different settings; however, the impact of ozone addition on a multicomponent fuel has been experimentally underexplored. This paper investigates the ozone-assisted flame propagation of a mixture of alkenes and alkanes in a low-pressure Hencken burner over a range of equivalence ratios, ozone concentrations, and pressures. One-dimensional numerical simulations of the flame speed using a detailed chemical kinetic model are also conducted for comparison to the experimental measurements. Both the experimental measurements and numerical simulations indicate that higher ozone concentrations result in increased flame speeds of methane/ethylene/air mixtures and that the relative flame speed enhancement by ozone is larger for off-stoichiometric conditions. Although quantitative agreement is achieved for the cases without ozone addition, the ozone-assisted flame speeds are generally overpredicted by the kinetic model. Finally, a computational analysis of the detailed flame structure is performed, and the coupling between fuel chemistry and the ozone H-abstraction reaction, ${\mathrm{O}}_3+\mathrm{H}={\mathrm{O}}_2+\mathrm{OH}$, is found to be crucial in determining the relative degree of flame speed enhancement of methane/ethylene/air mixtures by ozone.

已经研究了臭氧在多种不同环境下对燃烧的促进作用。但是，在实验上还没有研究添加臭氧对多组分燃料的影响。本文研究了低压汉肯燃烧器中一系列当量比，臭氧浓度和压力下，烯烃和烷烃混合物在臭氧辅助下的火焰传播。还使用详细的化学动力学模型进行了火焰速度的一维数值模拟，以与实验测量结果进行比较。实验测量和数值模拟均表明，较高的臭氧浓度会导致甲烷/乙烯/空气混合物的火焰速度增加，并且在化学计量比不理想的情况下，臭氧对火焰的相对速度增强更大。尽管在不添加臭氧的情况下达成了定量协议，但动力学模型通常会高估臭氧辅助的火焰速度。最后，对详细的火焰结构进行了计算分析，并分析了燃料化学成分与臭氧H吸收反应之间的耦合，${\mathrm{Ø}}_3+\mathrm{H}={\mathrm{Ø}}_2+哦$在确定臭氧对甲烷/乙烯/空气混合物的火焰速度增强的相对程度中起着至关重要的作用。