航空煤油替代燃料的着火与燃烧特性  

Ignition and combustion characteristics of surrogate fuels for kerosene

作　　者：曾文[1] 陈潇潇[1] 刘静忱[1] 马洪安[1] 

机构地区：[1]沈阳航空航天大学动力与能源工程学院,沈阳110136

出　　处：《航空动力学报》2012年第8期1688-1695,共8页Journal of Aerospace Power

基　　金：国家自然科学基金(50906059);辽宁省教育厅项目(L2010418);天津大学内燃机燃烧学国家重点实验室开放课题(K2011-06)

摘　　要：选用了航空煤油(Jet A-1)的3种替代燃料(正癸烷、正癸烷与三甲基苯双组分混合燃料、正癸烷与甲苯双组分混合燃料),并详细分析了这3种替代燃料着火与燃烧的详细化学反应机理(正癸烷单组分燃料为67种组分与344个基元反应,正癸烷与三甲基苯双组分混合燃料为118种组分与527个基元反应,正癸烷与甲苯双组分混合燃料为84种组分与440个基元反应).对这3种替代燃料在激波管中的着火延迟特性及在预混燃烧炉中的预混燃烧过程进行了详细的数值计算,并与实验数据进行了对比分析.同时,比较分析了双组分燃料中两种组分体积分数对着火与燃烧特性的影响.结果表明:在预测Jet A-1航空煤油的着火特性与预混燃烧特性上,两种双组分混合燃料要优于正癸烷单组分燃料.同时,两种双组分混合燃料中两种组分的体积分数对燃料的着火与燃烧特性影响显著.Three new surrogate fuels （n-decane, the mixed fuel of n-decane and 1, 2, 4-trimethylbenzene, the mixed fuel of n-decane and toluene ） for kerosene （Jet A-l） were chosen, and detailed reaction mechanisms （67 species and 344 reactions for n-decane, 118 species and 527 reactions for the mixed fuel of n-decane and 1, 2, 4-trimethylbenzene, and 84 species and 440 reactions for the mixed fuel of n-decane and toluene） for the ignition and combustion of these three surrogate fuels were analyzed. The ignition characteristics and the premixed combustion processes of these three surrogate fuels in the shock tube and the per- fectly stirred reactor were simulated especially, and the simulation results were compared with the experimental data. Furthermore, the effect of volume percentage of two species in the mixed fuel on the ignition and premixed combustion characteristics were analyzed. The results show that these two mixed fuels represent the ignition and combustion characteristics of Jet A-1 more accurately than n-decane single fuel does. At the same time, the effect of volume percentage of two species in the mixed fuel on the ignition and premixed combustion characteristics are remarkable.

关 键 词：着火特性 预混燃烧特性 详细化学反应机理 正癸烷 甲苯 三甲基苯 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程] TK401[动力工程及工程热物理—动力机械及工程]