喷管收敛-扩张角对爆震发动机性能影响分析

推进技术 ›› 2011, Vol. 32 ›› Issue (1): 97-102.

喷管收敛-扩张角对爆震发动机性能影响分析

曾昊,何立明,章雄伟,罗俊

空军工程大学工程学院,陕西西安 710038;空军工程大学工程学院,陕西西安 710038;空军工程大学工程学院,陕西西安 710038;空军工程大学工程学院,陕西西安 710038

发布日期:2021-08-15
作者简介:曾昊(1983—),男,博士生,研究领域为飞机推进系统气动热力理论与工程。E-mail:zenghao693@gmail.com.cn
基金资助:
空军工程大学学术基金(XS0901009)。

Investigation on the effects of nozzles with different convergent-divergent angle on PDE performance

Engineering Inst.,Air Force Engineering Univ., Xian 710038,China;Engineering Inst.,Air Force Engineering Univ., Xian 710038,China;Engineering Inst.,Air Force Engineering Univ., Xian 710038,China;Engineering Inst.,Air Force Engineering Univ., Xian 710038,China

Published:2021-08-15

摘要/Abstract

摘要： 为了研究喷管收敛-扩张角对爆震发动机性能的影响,以氢气和氧气混合物为例,对不同喷管收敛-扩张角下的爆震发动机工作过程进行了数值模拟,结果表明,不同喷管收敛-扩张角对爆震发动机性能的影响并不相同。增大扩张角,喷管出口面积增大,推力投影面积增大,排气时间减少,喷管内压力下降较快。收敛角为5°或扩张角为5°时的爆震发动机性能较好。

关键词: 脉冲爆震发动机;爆震波;喷管

Abstract: In order to investigate the effects of nozzles with different convergent-divergent angle on PDE performance, PDE with different nozzle convergent-divergent angle were simulated and hydrogen-oxygen mixture was used. The results indicate that different nozzle convergent-divergent angle has different effects on PDE performance．As divergent angle increases, area of nozzle outlet and thrust projection area increases, but exhaust time and pressure in nozzle decreases. When convergent angle is of 5°or divergent angle is of 5°, the performance of PDE is good. 

Key words: Pulse detonation engine；Detonation；Nozzle

曾昊,何立明,章雄伟,罗俊. 喷管收敛-扩张角对爆震发动机性能影响分析[J]. 推进技术, 2011, 32(1): 97-102.