环形射流喷口位置对激波聚焦起爆的影响分析

推进技术 ›› 2011, Vol. 32 ›› Issue (3): 437-442.

环形射流喷口位置对激波聚焦起爆的影响分析

曾昊,何立明,章雄伟,李海鹏,陈鑫

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;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 influence of jets spout location on detonationinitiation via imploding annular shock waves

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

Published:2021-08-15

摘要/Abstract

摘要： 为了研究环形射流喷口位置对激波聚焦起爆爆震的影响,以氢气和空气混合物为例,对不同环形射流喷口位置条件下的激波聚焦起爆过程进行了数值模拟。结果表明,随着喷口距凹壁面距离L增大,直接聚焦起爆和凹壁面反射起爆所需的临界入射压力逐渐增大,相应的聚焦时刻会滞后,形成焦点的位置距凹壁面越远。

关键词: 爆震起爆;爆震波;激波聚焦

Abstract: In order to investigate the influence of jets spout location on detonation initiation via imploding annular shock waves, detonation initiation with different jets spout locations were simulated and hydrogen-air mixture was used. The results indicate that jets spout locations were far away from hemisphere reflector wall. The critical jets pressure of direct initiation and wall reflection initiation is increased. The time of focus is late. The position of focus is farther from hemisphere reflector wall.

Key words: Detonation initiation; Detonation wave; Shock waves focus

曾昊,何立明,章雄伟,李海鹏,陈鑫. 环形射流喷口位置对激波聚焦起爆的影响分析[J]. 推进技术, 2011, 32(3): 437-442.