摘要
为了考察超声速混合层混合、燃烧流场特性,并探索其被动增强方法,利用高速纹影、自发辐射成像和平面激光诱导荧光(PLIF)技术对压力匹配条件下的超声速混合层在不同隔板构型下的流场特性进行研究.结果表明:相对于对混合层混合的影响,凹腔对燃烧的影响明显受到抑制;尾部交错结构隔板促进混合层流向涡的产生,大大提高了混合层内燃烧强度.
To investigate the mixing,combustion characteristic and passive mixing-enhancement methods of supersonic mixing layer,pressure matched supersonic mixing layer with different geometric configurations was explored using high-speed schlieren photographs,spontaneous emission imaging and planar laser induced fluorescence（PLIF）imaging.Results showed that,the influence of cavity on supersonic mixing layers was repressive under combustion condition.Splitters with sawtooth trail induced large-scale streamwise vortexes and great influence of combustion enhancement in supersonic mixing layer.
作者
李朗
晏至辉
刘彧
LI Lang YAN Zhi-hui LIU Yu(Department of Modern Mechanics, School of Engineering Science, University of Science and Technology of China, Hefei 230027, China Airbreathing Hypersonics Research Center, China Aerodynamics Research and Development Center, Mianyang Sichuan 621000, China College of Aerospace and Materials Engineering, National University of Defense Technology, Changsha 410073, China)
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2017年第1期27-34,共8页
Journal of Aerospace Power
关键词
超声速混合层
自发辐射
OH基PLIF
燃烧
流向涡
supersonic mixing layer
spontaneous emission
OH-PLIF（hydroxide radical-planar laser induced fluorescence）
combustion
steamwise vortex
