摘要
为了研究初始温度470 K、初始压力0.1 MPa下乙醇掺混对航空煤油层流火焰燃烧特性的影响,文中利用定容燃烧弹设备结合仿真进行对比分析。结果表明,乙醇的加入显著提升了航空煤油的层流火焰燃烧速度,但仿真结果与试验数据之间存在较大的偏差,在低当量比时尤为严重,需进一步优化机理。在此基础上通过敏感性分析,发现对层流火焰燃烧速度影响较大的4个基元反应,通过对4个基元反应的参数进行调整,修改得到新模型,该模型与试验值存在较好的吻合度。
To study the effect of ethanol blending on the combustion characteristics of aviation kerosene laminar flame at an initial temperature of 470 K and an initial pressure of 0.1 MPa,a constant volume incendiary bomb was used in this paper to conduct a comparative analysis combined with simulation.The results show that the addition of ethanol significantly improves the laminar burning velocity of aviation kerosene,but there is a large deviation between the simulation results and the experimental data,especially at low equivalence ratios,and the mechanism needs to be further optimized.On this basis,a sensitivity analysis was carried out,finding a great influence of four elementary reactions on the laminar burning speed.Adjusting the parameters of the four elementary reactions,a new model was obtained,being in good agreement with the experimental values.
作者
何旭
江正晖
桑正
刘泽昌
冯光远
杨青
蒋厚实
HE Xu;JIANG Zhenghui;SANG Zheng;LIU Zechang;FENG Guangyuan;YANG Qing;JIANG Houshi(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;Collaborative Innovation Center of Electric Vehicles in Beijing,Beijing 100081,China)
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2023年第7期712-718,共7页
Transactions of Beijing Institute of Technology
基金
国家自然科学基金面上项目(21961122007)。
关键词
航空煤油
乙醇
层流火焰燃烧速度
敏感性分析
aviation kerosene
ethanol
laminar flame burning speed
sensitivity analysis
