不同形式扩张喷管对两级PDE性能的影响

推进技术 ›› 2013, Vol. 34 ›› Issue (8): 1139-1146.

不同形式扩张喷管对两级PDE性能的影响

曾昊^1,2,何立明²,吴春华¹,徐继良¹

空军西安飞行学院,陕西户县 710306;空军工程大学航空航天工程学院,陕西西安 710038;空军西安飞行学院,陕西户县 710306;空军西安飞行学院,陕西户县 710306

发布日期:2021-08-15
作者简介:曾昊(1983—),男,博士,讲师,研究领域为飞机推进系统气动热力理论与工程。E-mail:zzzwww693@163.com.

Investigation for Effects of Diverging Nozzles on Two-Stage PDE Performance

Air Force Xi′an Flight Academy, Hucounty 710306,China;Institute of Aeronautics and Astronautics Engineering, Air Force Engineering University, Xi’an 710038,China;Air Force Xi′an Flight Academy, Hucounty 710306,China;Air Force Xi′an Flight Academy, Hucounty 710306,China

Published:2021-08-15

摘要/Abstract

摘要： 为了研究不同形式扩张喷管对两级脉冲爆震发动机性能的影响,以氢气和氧气混合物为例,对安装不同扩张角、长度和扩张曲线的扩张喷管的两级脉冲爆震发动机工作过程进行了数值模拟。结果表明,具有较大扩张角的喷管其推力增益较大；当扩张面积比一定,喷管长度不能太长和太短,否则喷管增推性能会下降；不同扩张曲线喷管对两级爆震发动机性能有较大影响,在扩张面积一定,长度一定的条件下,采用曲率较大的钟形型线的喷管时,凹面腔获得的冲量最大,喷管获得的冲量也最大。 

关键词: 脉冲爆震发动机;尾喷管;爆震波;激波 

Abstract: In order to investigate the effects of different nozzles on performance of two stage PDE,two stage PDE with various diverging angle nozzle, various length nozzle and various diverging curvature nozle were simulated using hydrogen/oxygen mixture. The results show that the thrust augmentation of larger diverging angle nozzle is better. When nozzle expansion ratio is constant, nozzle length needs to be neither too short nor too long.Otherwise the thrust augmentation performance of nozzle is worse. When nozzle diverging area and nozzle length are both constant, using bell shape nozzle of greater curvature, both resonator impulse and nozzle impulse are the best. 

Key words: Pulse detonation engine; Nozzle; Detonation wave; Shock

曾昊,何立明,吴春华,徐继良. 不同形式扩张喷管对两级PDE性能的影响[J]. 推进技术, 2013, 34(8): 1139-1146.

ZENG Hao^1,2,HE Li-ming²,WU Chun-hua¹,XU Ji-liang¹. Investigation for Effects of Diverging Nozzles on Two-Stage PDE Performance[J]. Journal of Propulsion Technology, 2013, 34(8): 1139-1146.

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