Page 49 - 《爆炸与冲击》2026年第10期

第 46 卷 第 10 期 爆 炸 与 冲 击 Vol. 46, No. 10
2026 年 10 月 EXPLOSION AND SHOCK WAVES Oct., 2026

DOI：10.11883/bzycj-2025-0358

活塞驱动的病态爆轰波纵向稳定性研究 *

陆 乐，许 卓，郭则庆，董 刚

（南京理工大学瞬态物理全国重点实验室，江苏 南京 210094）

摘要： 为了研究病态爆轰的传播稳定特性，通过使用摩尔数减小的单步反应实现其爆轰过程，采用一维反应性欧
拉方程和高精度数值格式对一维病态爆轰波纵向传播的振荡不稳定过程进行数值模拟，系统考察了活塞驱动速度和
活化能对病态爆轰波稳定性的影响，并分析爆轰波稳定性与其反应区结构变化之间的关系。结果表明：在相同的反应
放热条件下，病态爆轰波比理想爆轰波更不稳定。活塞驱动速度的增加有利于病态爆轰波的稳定，而活化能的增加则
不利于病态爆轰波的稳定。过驱病态爆轰的高频低幅振荡时其反应区结构变化不大；强解条件下爆轰波的低频低幅
振荡是反应区强解的 2 种构型交替出现导致的；而过驱病态爆轰的低频高幅振荡特性则是由流量发生变化的弱解、强
解和过驱解等反应区结构的交替变化所表征的。
关键词： 病态爆轰；反应区结构；非线性稳定性；活塞驱动爆轰
中图分类号： O381 国标学科代码： 13035 文献标志码： A

Longitudinal stability analysis of piston-driven pathological detonation wave

LU Le, XU Zhuo, GUO Zeqing, DONG Gang
（National Key Laboratory of Transient Physics, Nanjing University of Science and Technology,
Nanjing 210094, Jiangsu, China）

Abstract: Pathological detonation is a non-ideal detonation that cannot effectively support the propagation of detonation
waves due to other physical or chemical factors offsetting part of the chemical heat release. It is common in the practical
processes, and the study on propagation stability of the detonation is of great significance. A single-step global reaction model
was adopted to analyze the propagation stability of pathological detonation waves. Reduction of the reactant molar quantity
decreased the overall system volume, introducing a negative-work effect that enables the pathological detonation regime. The
process was numerically simulated using the one-dimensional reactive Euler equations, which couples chemical energy release
with flow-field dynamics. A high-order finite difference method combined with a high-resolution flux-splitting scheme ensured
accurate resolution of shock fronts and detailed reaction-zone structures. Parametric variations in piston-driven speed and
activation energy were introduced to represent the effects of external mechanical forcing and intrinsic chemical reactivity,
respectively. Comparative analyses of temporal evolution across parameter sets revealed the coupling mechanism between
piston-driven flow dynamics and chemical kinetics. Further examination of the spatiotemporal distributions of temperature,
pressure, and reactant mass fraction elucidated the link between detonation stability and the internal structural evolution of the
reaction zone. The effects of piston-driven speed and activation energy on the stability of pathological detonation wave are
systematically investigated, and the relationship between the stability of detonation wave and the reaction zone structure is
analyzed. The results show that the pathological detonation is more unstable than the ideal detonation wave under the same
reaction exothermic conditions. The increase of piston-driven speed is beneficial to the stability of the pathological detonation

* 收稿日期： 2025-11-03；修回日期： 2025-12-24
基金项目： 国家自然科学基金（12472335）
第一作者： 陆 乐（2000－ ），男，博士研究生， lule_phd@qq.com
通信作者： 董 刚（1970－ ），男，博士，研究员，gdong@njust.edu.cn

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