超声速气流中的典型混合增强方法  

Typical Mixing Enhancement Approaches in Supersonic Crossflow

作　　者：周燕梅 吴继平[1] 黄伟[1] Zhou Yanmei;Wu Jiping;Huang Wei(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2期108-119,共12页Aero Weaponry

基　　金：国家自然科学基金项目(11972368)。

摘　　要：超燃冲压发动机指空气以超声速进入燃烧室并与燃料进行混合和燃烧,但是在来流速度如此快的条件下,要实现燃料与空气的充分混合与稳定燃烧是很困难的,而稳定燃烧的先前条件是燃料与空气的充分混合。因此,增强混合的研究对超燃冲压发动机的发展起着重要的作用。国内外众多学者不断研究并提出混合增强方法来解决燃料与空气充分混合的问题,本文主要对混合增强方法中的横向射流、脉冲射流以及凹腔的研究进展进行总结与归纳,并对未来的发展提出展望。Scramjet refers to air entering the combustion chamber at supersonic speed and then mixing and burning with fuel.However,in the condition of such a fast flow speed,it is difficult to achieve full mixing and stable combustion of fuel and air.The previous condition of stable combustion is the full mixing of fuel and air.Therefore,the study of mixing enhancement plays an important role in the development of scramjet engines.Many scholars at home and abroad continue to study and propose mixing enhancement methods to solve the problem of full mixing of fuel and air.This paper mainly summarizes the research progress of transverse injection,pulsed injection and cavity in the mixing enhancement approaches,and puts forward prospects for future development.

关 键 词：超燃冲压发动机 混合增强 横向射流 脉冲射流 凹腔 

分 类 号：TJ760[兵器科学与技术—武器系统与运用工程] V211[航空宇航科学与技术—航空宇航推进理论与工程]