超音速气流中煤油蒸发与掺混特性研究  

A Study on the Evaporating and Mixing Characteristics of Kerosene in Supersonic Flow Field

作　　者：龚景松[1] 梁欣欣[1] 贾云涛[1] 

机构地区：[1]清华大学航天航空学院,北京100084

出　　处：《四川兵工学报》2013年第10期119-121,125,共4页Journal of Sichuan Ordnance

基　　金：清华大学基础研究基金资助

摘　　要：数值模拟了超燃冲压发动机模型燃烧室中煤油在空气中的蒸发与掺混特性,分别计算了煤油温度、煤油液滴直径、雾化角等射流参数的影响;结果表明:煤油温度越高,雾化颗粒直径越小,则颗粒蒸发成气相所需的时间越短,相应的浓度就越高,雾化角的变化对蒸发和掺混的效果不明显;模拟结果对超燃冲压发动机煤油雾化和掺混设计具有一定的指导意义。The evaporating and mixing characteristics of kerosene with supersonic air in a model scramjet combustor are presented numerically in this paper. The effect of the fuel temperature, the diameter of kero- sene liquid droplets and the spray cone angle are simulated respectively. The result shows that the evapora- tion time needed decreases with the increasing of fuel temperature and the reducing of the initial diameter of sprays. At the same time, a high concentration of fuel evaporation can be presented. But the effect of spray cone angle on the evaporation and mixing process is not obvious. The result will benefit for the de- sign of kerosene injection and mixing process for Scramjet.

关 键 词：超燃冲压发动机 煤油 雾化 掺混 蒸发 

分 类 号：V231.23[航空宇航科学与技术—航空宇航推进理论与工程]