初始条件对H_(2)-空气湍流扩散燃烧及NO生成的影响  

Effects of Initial Conditions on Hydrogen-Air Turbulent Diffusion Combustion and NO Formation

作　　者：黄章俊[1] 唐志峰 何洪浩 李鹏飞 田红[1] HUANG Zhangjun;TANG Zhifeng;HE Honghao;LI Pengfei;TIAN Hong(College of Energy and Power Engineering,Changsha University of Science&Technology,Changsha 410114,China;State Grid Hunan Electric Power Company Research Institute,Changsha 410007,China;State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]长沙理工大学能源与动力工程学院,长沙410114 [2]国网湖南省电力有限公司电力科学研究院,长沙410007 [3]华中科技大学煤燃烧国家重点实验室,武汉430074

出　　处：《动力工程学报》2022年第8期693-700,共8页Journal of Chinese Society of Power Engineering

基　　金：国家自然科学基金资助项目(52076095);湖南省自然科学基金资助项目(2019JJ40299);湖南省教育厅资助项目(20A004)。

摘　　要：将考虑有限速率反应的涡耗散概念(EDC)模型与13组分34步H_(2)-N_(2)反应机理耦合,研究了不同初始条件对H_(2)-空气湍流扩散燃烧过程的影响。结果表明:空气初始温度和燃料初始温度升高均能使火焰中心轴线上的峰值温度升高和NO质量分数增大;随着空气入口速度的增大,火焰峰值温度上升,NO质量分数增大;随着燃料入口速度的增大,火焰峰值温度下降,NO质量分数减小;不同初始条件下,NO生成以基元反应R22、R31和R32为主,而NO消耗以基元反应R20、R29和R30为主。The effects of different initial conditions on hydrogen-air turbulent diffusion combustion process were studied by coupling the eddy dissipation concept(EDC)model considering finite rate reaction with the 13 species 34 steps H_(2)-N_(2) reaction mechanism.Results show that the peak temperature on the central axis of the flame and the mass fraction of NO would increase with the rise of initial air temperature and initial fuel temperature.As the air inlet velocity increases,both the flame peak temperature and the mass fraction of NO increase.As the fuel inlet velocity increases,both the flame peak temperature and the mass fraction of NO decrease.Under different initial conditions,the formation reactions of NO are mainly composed of the elementary reactions R22,R31 and R32,while the consumption reactions of NO are mainly composed of the elementary reactions R20,R29 and R30.

关 键 词：初始温度 入口速度 H2-空气燃烧 NO生成 

分 类 号：TK16[动力工程及工程热物理—热能工程]