氨气掺混乙烯层流燃烧速度测量及动力学分析

The laminar burning velocities of NH₃/C₂H₄/air flames at different doping ratios (0-1) were measured using a constant volume combustion chamber. The laminar burning velocities of NH₃/air and C₂H₄/air were verified, and numerical calculations and kinetic analysis of the laminar burning velocities of NH₃/C₂H₄/air flames were carried out using Konnov Mech (2021) and GRI 3.0 models, in which the Konnov mechanism showed good performance. As the results show, laminar burning velocities were increased due to the addition of C₂H₄. At the same time, NH₃ and C₂H₄ were blended to broaden the reaction pathways and accelerate the reaction by a series of components NO, CH₃, etc. interactively. Meanwhile, the concentrations of H, O and OH radicals were analyzed to investigate the reasons for the differences in the predicted laminar burning velocities among different mechanisms.