超燃冲压发动机燃料混合增强技术研究进展  

Research Progress on Fuel Mixing Enhancement Technology of Scramjet

作　　者：唐浩然 沈赤兵[1] 杜兆波 韩毅[1] 刘苗娥 Tang Haoran;Shen Chibing;Du Zhaobo;Han Yi;Liu Miao’e(Science and Technology on Scramjet Laboratory,College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学空天科学学院高超声速冲压发动机技术重点实验室,长沙410073

出　　处：《航空兵器》2023年第1期80-94,共15页Aero Weaponry

基　　金：国家自然科学基金项目(12072367);湖南省自然科学基金项目(2022JJ4666);湖南省研究生科研创新项目(CX20210023)。

摘　　要：随着超燃冲压发动机技术的发展,发动机燃烧室内燃料的高效混合与燃烧技术成为了研究热点。由于在高马赫数飞行条件下,燃料在燃烧室内驻留时间极短,而混合过程对燃料和来流的热释放具有重要影响,因此需要一种具有高混合效率的燃料喷注方案,国内外学者对此提出了多种混合增强技术。本文对壁面横向射流、凹腔、激波/剪切层干扰以及波形壁混合增强方法的研究进展进行了综述,梳理总结了各类方法的混合增强机理与主要特点,并提出对混合增强技术未来研究方向的展望。With the development of scramjet technology,efficient mixing and combustion of fuel in combustion chamber has become a research hotspot.The residence time of fuel in the combustion chamber is extremely short under high Mach number flight conditions,and the mixing process has an important impact on the heat release of fuel and incoming flow.Therefore,a high-efficiency fuel injection scheme is needed,and a variety of mixing enhancement approaches have been proposed and studied.In this paper,the research progress of mixing enhancement approaches,such as transverse injection,cavity,shock/shear layer interaction and wavy wall,are reviewed,and the mechanism and characteristics of various mixing enhancement approaches are summarized.Finally,the future research directions of mixing enhancement technology is prospected.

关 键 词：超燃冲压发动机 混合增强 横向射流 凹腔 入射激波 波形壁 

分 类 号：TJ760.1[兵器科学与技术—武器系统与运用工程] V43[航空宇航科学与技术—航空宇航推进理论与工程]