氧化剂喷注面积对连续旋转爆轰波传播特性影响的实验研究

doi:10.3969/j.issn.1000-1093.2018.12.008

兵工学报 ›› 2018, Vol. 39 ›› Issue (12): 2345-2353.doi: 10.3969/j.issn.1000-1093.2018.12.008

氧化剂喷注面积对连续旋转爆轰波传播特性影响的实验研究

魏万里，翁春生，武郁文，郑权，李宝星

(南京理工大学瞬态物理国家重点实验室, 江苏南京 210094)

收稿日期:2018-04-02 修回日期:2018-04-02 上线日期:2019-01-31
通讯作者: 翁春生(1964—), 男, 教授，博士生导师 E-mail:wengcs@126.com
作者简介:魏万里(1993—), 男, 博士研究生。 E-mail: weiwanl@163.com
基金资助:
国家自然科学基金项目（11702143、11472138）；中央高校基本科研业务费专项资金项目（30918011343）；国防预先研究基金项目（61426040201162604002）；江苏省研究生科研与实践创新计划项目（KYCX18_381）

Experimental Research on Influence of Oxidant Injection Area on the Propagation Characteristics of Continuous RotatingDetonation Wave

WEI Wan-li， WENG Chun-sheng， WU Yu-wen， ZHENG Quan， LI Bao-xing

(National Key Laboratory of Transient Physics, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China)

Received:2018-04-02 Revised:2018-04-02 Online:2019-01-31

摘要/Abstract

摘要： 为了研究氧化剂喷注面积对连续旋转爆轰波传播特性的影响，以H₂为燃料、空气为氧化剂，在喷孔-环缝式连续旋转爆轰发动机上开展了一系列试验研究。基于燃烧室内高频压力信号和氧化剂集气腔内的压力信号，分析了氧化剂喷注面积对连续旋转爆轰波传播过程、速度亏损和稳定性以及爆轰波波头高度的影响。试验结果表明：当推进剂质量流量不变时，增大氧化剂喷注面积，爆轰波传播速度亏损增大，爆轰波稳定性变差，同时爆轰波波头高度减小；在氧化剂喷注面积为217.1 mm²、当量比为0.9时，爆轰波平均速度达到1 800 m/s，为理论Chapman-Jouguet速度的93%，同时爆轰波表现最为稳定；当氧化剂喷注面积不变时，随着当量比的增大，爆轰波传播的稳定性先升高、后降低。

关键词: 连续旋转爆轰发动机, 爆轰波, 氧化剂喷注面积, 传播特性, 速度亏损

Abstract: A series of experimental study of continuous rotating detonation engine (CRDE) with orifice-slit injection mode, which utilizes H₂ as fuel and air as oxidant, were carried out to study the influence of oxidant injection area on the propagation characteristics of continuous rotating detonation wave . Based on the high-frequency pressure signal in the combustion chamber and the pressure signal in the oxidant chamber, the influence of oxidant injection area on the propagation, velocity loss, stability and wavefront height of detonation wave is analyzed in detail. The experimental results show that, when the mass flow rate of propellant remains constant, the loss of propagation velocity of detonation wave becomes larger, the stability of propagation velocity of detonation wave becomes worse, and the wavefront height of detonation wave decreases with the increase in oxidant injection area. When the oxidant injection area is 217.1 mm² and the equivalent ratio is 0.9, the average velocity of detonation wave reaches 1 800 m/s, which is 93% of the theoretical Chapman-Jouguet (CJ) velocity, and the stability of detonation wave is also the best. When the oxidant injection area remains constant, the stability of detonation wave first increases and then decreases with the increase in equivalence ratio. Key

Key words: continuousrotatingdetonationengine, detonationwave, oxidantinjectionarea, propagationcharacteristic, speedloss

中图分类号:

O381
V437

魏万里，翁春生，武郁文，郑权，李宝星. 氧化剂喷注面积对连续旋转爆轰波传播特性影响的实验研究[J]. 兵工学报, 2018, 39(12): 2345-2353.

WEI Wan-li， WENG Chun-sheng， WU Yu-wen， ZHENG Quan， LI Bao-xing. Experimental Research on Influence of Oxidant Injection Area on the Propagation Characteristics of Continuous RotatingDetonation Wave[J]. Acta Armamentarii, 2018, 39(12): 2345-2353.

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氧化剂喷注面积对连续旋转爆轰波传播特性影响的实验研究

Experimental Research on Influence of Oxidant Injection Area on the Propagation Characteristics of Continuous RotatingDetonation Wave

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