一种单喷嘴推力室燃烧内流场的方法  

Method for investigation of combustion flowfield characteristics in single element gas/gas injector chamber

作　　者：汪小卫[1] 金平[1] 蔡国飙[1] 

机构地区：[1]北京航空航天大学宇航学院,北京100191

出　　处：《北京航空航天大学学报》2009年第9期1095-1099,共5页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家863基金资助项目

摘　　要：为了方便开展单喷嘴气气喷注器燃烧试验研究,设计了一种燃烧室壁面测温,并结合推力室燃烧流场的非稳态数值模拟的方法,以考察燃烧室内流场的发展和燃烧完成情况.应用试验数据对不同的湍流模型和燃烧模型进行了对比研究,得到与试验结果较为吻合的计算模型.并应用该方法开展了同轴剪切式喷注器氢/氧喷注动量比、燃烧室压力变化的试验研究.试验结果表明喷注器掺混燃烧效果随氢/氧喷注动量比增加而增强,而不随燃烧室压力的变化而变化.To facilitate hot-fire tests of single element gas/gas injector chamber, a method used to reveal the combustion development and completion length of the chamber flowfield was designed, which combines wall temperature measurement and numerical simulation of gas/gas combustion flowfield. The impacts of using various turbulence and combustion models was investigated to obtain the models which best represented the experimental data. And influences of H2/O2 momentum ratio and chamber pressure on shear-eoaxial injector combustion flowfield were investigated. The result shows that the better mixing and the shorter combustion lengtb can be obtained with the larger H2/O2 momentum-ratio and the chamber pressure can hardly influences the combustion flowfield.

关 键 词：测量方法 燃烧流场 气气喷注器 燃烧室 数值模拟 

分 类 号：V434[航空宇航科学与技术—航空宇航推进理论与工程]