甲烷-氢气-空气预混合气燃烧特性研究  

Combustion Characteristics Research on Methane-Hydrogen-Air Pre-mixture

作　　者：尉庆国[1] 白小磊[2] 张红光[2] 

机构地区：[1]中北大学机电工程学院,太原030051 [2]北京工业大学环境与能源工程学院,北京100124

出　　处：《车辆与动力技术》2011年第4期13-17,共5页Vehicle & Power Technology

基　　金：教育部留学回国人员科研启动基金(32310790200801);北京市教委科技面上项目(JC310790200901)

摘　　要：在定容燃烧弹内进行了甲烷-氢气-空气混合气燃烧试验,采集燃烧压力数据和火焰扩散图片,讨论不同的初始温度、初始压力、燃空当量比、掺氢比对甲烷-氢气-空气混合气的最大燃烧压力、最大压力升高率、燃烧速率和燃烧稳定性的影响.结果表明:混合气在较高初始温度和较低初始压力下,燃烧速率相对较大;随着混合气中氢气比例增加,最大燃烧压力值增大,其出现时刻提前,火焰半径明显增大且出现褶皱,火焰传播稳定性降低.Combustion experiments of methane-hydrogen-air mixture were conducted in a constant volume combustion bomb.Combustion pressures and schlieren images were collected.The effect of initial temperatures,pressures,fuel-air equivalence ratios and hydrogen blend ratio were discussed on the maximum combustion pressure,the maximum pressure rising rate,burning rate and combustion stability.The result shows that the combustion rate of the mixture is faster under the condition of higher initial temperature and lower initial pressure,the maximum combustion pressure increases earlier with the raising of hydrogen blend ratio,the flame radius increases obviously,the wrinkle occurs,and the stability of flame propagation decreases.

关 键 词：定容燃烧弹 掺氢比 燃烧压力 纹影 

分 类 号：TK16[动力工程及工程热物理—热能工程]