摘要
燃料的射流与混合是超燃冲压发动机的关键技术之一。为实现燃料的高效射流、充分掺混与稳定燃烧,学者们提出并试验了多种混合增强方法,主要分为被动混合增强方法与主动混合增强方法。本文综述了壁面横向单孔/多孔射流、微小斜坡/涡流发生器、脉冲射流以及波形壁等混合增强方法的机理和研究现状,并提出了对未来的展望,尤其是针对大尺度发动机、宽速域发动机以及更高来流马赫数条件下的燃料混合增强策略。
Injection and mixing of the fuel in the supersonic crossflow is one of the key technologies of the scramjet engine.In order to achieve high efficiency jet,complete mixing and stable combustion of the fuel,scholars have proposed and tested a variety of mixing enhancement strategies,which are mainly divided into passive and active mixing enhancement approaches.In this paper,the mechanism and research status of the mixing enhancement strategies,such as the transverse single/dual injection,micro ramp/vortex generator,pulsed injection and wavy wall,are reviewed,and the future prospect is put forward at last,especially on the fuel mixing augmentation scheme in the engine with large scale,in the engine with wide-range speed and on the freestream condition with larger Mach number.
作者
黄伟
杜兆波
Huang Wei;Du Zhaobo(Sciencc and Technology on Scramjet Laboratoa,Colleae of Aerospace Sciencc and Engineering,National Universite oS Defense Technology,Changsha 410073,China)
出处
《航空兵器》
CSCD
北大核心
2020年第4期1-10,共10页
Aero Weaponry
基金
国家重点研发计划项目(2019YFA0405300)
国家自然科学基金项目(11972368)。
关键词
超声速流动
混合增强
横向射流
涡流发生器
脉冲射流
supersonic crossflow
mixing enhancement
transverse injection
vortex generator
pulsed injection
