燃烧室构型对旋转爆震波传播特性的影响  

Effect of combustor configurations on propagation characteristics of rotating detonation waves

作　　者：赵明皓 王可[2] 王致程 朱亦圆 李清安 范玮[1] ZHAO Minghao;WANG Ke;WANG Zhicheng;ZHU Yiyuan;LI Qing'an;FAN Wei(School of Power and Energy,Northwestern Polytechnical University,Xi'an 710072,China;Shaanxi Key Laboratory of Thermal Sciences in Aeroengine System,Northwestern Polytechnical University,Xi'an 710129,China)

机构地区：[1]西北工业大学动力与能源学院,西安710072 [2]西北工业大学陕西省航空动力系统热科学重点实验室,西安710129

出　　处：《航空学报》2022年第5期243-254,共12页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(52076181,52176133);陕西省自然科学基础研究计划(2020JQ-185);中央高校基本科研业务费(3102019ZX024);西北工业大学博士生创新基金(CX2021072)。

摘　　要：为了揭示燃烧室构型对旋转爆震波传播特性的影响,设计了不同结构参数的5个燃烧室,包括环形、空桶形和凹腔形3种燃烧室形式。喷注器采用喷孔-环缝设计,燃料和氧化剂分别为乙烯和富氧空气。在相同的供给条件下,实验研究了燃烧室构型对旋转爆震波传播特性和推进性能的影响。结果表明:空桶形燃烧室稳定爆震模态的工作范围最宽且爆震波最为稳定,但推进性能较差;两个凹腔形燃烧室的工作范围介于燃烧室宽度为19 mm和15 mm的两个环形燃烧室之间,但推进性能略高于宽度为19 mm的环形燃烧室;此外,凹腔形燃烧室的工作范围随凹腔长度的增加而增加。To analyze the propagation characteristics of the rotating detonation waves in different combustors,five combustors with different structural parameters were adopted,including one hollow chamber,two kinds of annular chambers,and two kinds of cavity chambers.Experiments were conducted in different combustors under the same supplying condition utilizing ethylene and oxygen-enriched air.The fuel and oxidizer were injected separately through a slot-orifice injection structure.The characteristics of the rotating detonation wave and propulsive performance are discussed.In the hollow chamber,the rotating detonation wave propagates steadily in the stable detonation mode with a wider range of equivalence ratio,while the propulsive performance is the lowest.In the cavity chambers,the operating range of the stable detonation mode is between the two annular chambers with chamber widths of 19 mm and 15 mm,but the propulsive performance is slightly higher than that of the annular chamber with a width of 19 mm.In addition,the operating range based on the cavity chambers increases with the increase of the cavity length.

关 键 词：燃烧室构型 传播特性 工作范围 推进性能 旋转爆震 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程]