NH₃/H₂ 流动状态下的激光点火及燃烧特性研究

In this paper, based on the flow ignition platform, laser ignition experiments were carried out on NH₃/H₂ mixtures under different hydrogen doping ratios and equivalent ratios, and the probability of ignition, minimum ignition energy (MIE), and flame development were analyzed under different conditions. It was found that H₂ doping can effectively reduce the MIE of the mixture, of which the effect is most obvious when the doping ratio is 10%. But the effect of changing the hydrogen doping ratio on the subsequent development of the flame is not obvious. Increasing the equivalent ratio will make the MIE first decline and then rise. With the equivalent ratio of 0.8, the mixture of the MIE is the lowest. The change of the equivalent ratio has a significant effect on the flame area, the intensity of the flame luminescence and the flame center of gravity. The increase of the equivalent ratio can effectively improve the combustion performance of ammonia flame.