基于浓度敏感性和反应速率的甲烷/空气燃烧机理简化  

Reduced Mechanism for Air/methane Combustion Based on Concentration Sensitivity Analysis and Rate of Reaction

作　　者：李昊 刘雨晴 刘乐乐 苏泽轩 姚新钰 杨广峰 崔静 Li Hao;Liu Yu-qing;Liu Le-le;Su Ze-xuan;Yao Xin-yu;Yang Guang-feng;Cui Jing(College of Aeronautical Engineering,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]中国民航大学航空工程学院,天津300300

出　　处：《内燃机与配件》2023年第21期31-34,共4页Internal Combustion Engine & Parts

摘　　要：随着世界能源短缺问题和环境恶化的日益突出,寻求合适的替代燃料或提高燃烧效率成为迫在眉睫的问题。但是燃料的详细燃烧机理所包含的组分和反应过多,因此对燃料进行机理简化能明显促进模拟计算的进行。基于甲烷的详细燃烧化学动力学机理,利用浓度敏感性结合反应速率的分析方法对运算结果进行分析,分别采用层流预混火焰和良搅拌反应模型进行运算处理,利用浓度敏感性结合反应速率的分析方法对运算结果进行分析,并增加在发动机模型中的验证,得到了一套包含18种组分、25个基元反应的简化机理。简化结果在研究范围内保持了良好的吻合性。In many ways,traditional fuels can no longer meet development needsIt is urgent to find suitable alternative fuels or improve combustion efficiency.However,the detailed combustion mechanism of fuel contains too many components and reactions,so simplifying the mechanism of fuel can obviously promote the simulation calculation.Based on the detailed chemical kinetic mechanism of methane combustion,the calculation results were analyzed by using the analytical method of concentration sensitivity combined with reaction rate,and the laminar premixed flame and well-stirred reaction model were used for calculation.The calculation results were analyzed by using the analytical method of concentration sensitivity combined with reaction rate,and the verification in the engine model was increased,and a set of simplified mechanisms containing 18 components and 25 elementary reactions was obtained.The simplified results keep a good agreement within the research scope.

关 键 词：甲烷 数值模拟 敏感性分析 模型 简化机理 良搅拌反应器 产物速率分析 

分 类 号：X915.5[环境科学与工程—安全科学]