Investigation on the influence of jet pressure on detonation initiation via imploding annular shock waves

ZENG Hao; HE Li-ming; ZHANG Xiong-wei; LI Hai-peng; CHEN Xin

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Investigation on the influence of jet pressure on detonation initiation via imploding annular shock waves

更新时间：2026-07-07

- Investigation on the influence of jet pressure on detonation initiation via imploding annular shock waves
- Vol. 25, Issue 9, (2010)
- 作者机构：
  
  空军工程大学工程学院,西安,710038
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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ZENG Hao, HE Li-ming, ZHANG Xiong-wei, et al. Investigation on the influence of jet pressure on detonation initiation via imploding annular shock waves[J]. 2010, 25(9).
DOI：

ZENG Hao, HE Li-ming, ZHANG Xiong-wei, et al. Investigation on the influence of jet pressure on detonation initiation via imploding annular shock waves[J]. 2010, 25(9). DOI：

摘要

为了研究射流入射压力对环形激波聚焦爆震起爆的影响

以氢气和空气混合物为例

对不同射流入射压力下环形激波聚焦爆震起爆过程进行了数值模拟

结果表明

当环形射流入射强度足够大时

其形成的激波聚焦能够形成高温、高压区域

从而直接起爆爆震波;爆震管推力壁对激波具有反射加强作用

有助于爆震波的形成;环形射流入射压力存在一个临界值

低于此值时

则不能起爆爆震波.

Abstract

In order to investigate the influence of jet pressure on detonation initiation via imploding annular shock waves

detonation initiation with different jet pressures was simulated with hydrogen-air mixture.The results indicate that

when jet pressure is high enough

imploding annular shock waves can form high pressure and high temperature region that lead to direct initiation;thrust wall can strengthen reverberation shock

which contributes to initiate detonation;when the jet pressure is lower than its critical value

detonation can not be initiated.

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