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为了阐明氢气添加对国产RP-3航空煤油燃烧特性的影响,在定容燃烧反应器中实验测量了初始压力为0.1MPa、初始温度分别为390,420K、当量比范围为0.8~1.5时RP-3航空煤油/氢气混合气的层流燃烧速度与马克斯坦长度,分析了掺氢比对火焰发展结构、层流燃烧速度及马克斯坦长度的影响.结果表明:随着掺氢比的提高,在火焰发展过程中,火焰前锋面逐渐出现裂纹或褶皱,火焰的不稳定性逐渐增强;随着混合气当量比或掺氢比的升高,RP-3航空煤油/氢气混合气的马克斯坦长度逐渐减小;当混合气当量比从0.8升高至1.5时,RP-3航空煤油/氢气混合气的层流燃烧速度呈现先增加后降低的趋势,当量比为1.2时混合气的层流燃烧速度达到最大;同时,随着初始温度或掺氢比的升高,RP-3航空煤油/氢气混合气的层流燃烧速度逐渐升高。
In order to clarify the effect of hydrogen addition on the combustion characteristics of domestic RP-3 aviation kerosene, the initial pressure of 0.1 MPa, the initial temperature of 390 and 420 K, and the equivalence ratio range of 0.8 to 1.5 The effects of hydrogen addition ratio on flame development structure, laminar combustion velocity and marxan length were analyzed.The results showed that with the increase of hydrogen addition ratio, In the process of development, the flames front or the flaw gradually appeared, and the instability of the flames gradually increased. With the increase of mixture equivalence ratio or hydrogen mixing ratio, the length of marxams of RP-3 aviation kerosene / hydrogen mixture gradually decreased When the equivalence ratio was increased from 0.8 to 1.5, the laminar combustion velocity of RP-3 aviation kerosene / hydrogen gas mixture firstly increased and then decreased. When the equivalence ratio was 1.2, the laminar combustion velocity of the mixed gas reached At the same time, the laminar flow rate of RP-3 kerosene / hydrogen mixture gradually increases with the increase of initial temperature or hydrogen mixing ratio.