大速差射流装置对固体粉末冲压发动机燃烧性能的影响分析  

Analysis on the combustion performance resulted of the big speed difference combustion stabilization device in the solid power fuel ramjet

作　　者：马利锋 杨玉新 霍东兴 董新刚 

机构地区：[1]西安航天动力技术研究所,西安710100

出　　处：《中国科学：技术科学》2015年第1期21-24,共4页Scientia Sinica(Technologica)

摘　　要：采用颗粒轨道模型对固体粉末冲压发动机的两相流场进行了三维数值模拟,研究了大速差射流稳燃装置对发动机掺混燃烧性能的影响.计算结果表明,大速差射流稳燃装置提高了粉末燃料与空气的掺混程度,同时增大了粉末燃料在发动机中的停留时间,大幅度提高了粉末冲压发动机的燃烧效率,发动机燃烧效率达到89.3%.The 3D two-phase flow field in the solid power fuel ramjet was numerically simulated by the particle trajectory model, and the combustion performance resulted of the big speed difference combustion stabilization device was studied. The results show that firstly the big speed difference combustion stabilization devices improve the degree of mixing between the power fuel and air, secondly the device not only increase the residence time of the power fuel in the engine, but also improves the combustion efficiency of powder ramjet as many as 89.3%.

关 键 词：粉末冲压发动机 大速差射流 数值模拟 硼颗粒燃烧 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]