炸药裂缝燃烧增压过程的一维理论

尚海林; 胡秋实; 李涛; 傅华; 胡海波

doi:10.11883/bzycj-2019-0345

炸药裂缝燃烧增压过程的一维理论

doi: 10.11883/bzycj-2019-0345

中国工程物理研究院流体物理研究所冲击波物理与爆轰物理重点实验室，四川绵阳 621999

基金项目: 国家自然科学基金（11702273，11802288，11802283，11572297）；冲击波物理与爆轰物理重点实验室基金（6142A0305010717，6142A03050105）

详细信息

作者简介:
尚海林（1983－　），男，博士，副研究员，hailinshang@caep.cn

通讯作者:
李　涛（1978－　），男，博士，副研究员，tedleeus@163.com

中图分类号: O354; TJ55
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出版历程
- 收稿日期: 2019-09-06
- 修回日期: 2019-10-31
- 网络出版日期: 2019-10-25
- 刊出日期: 2020-01-01

One-dimensional theory for pressurization process in explosive crack burning

Laboratory for Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621999, Sichuan, China

摘要

摘要: 为了深入理解炸药裂缝燃烧演化过程中的压力增长行为，提升对事故点火下武器装药向高烈度反应转变机制的认识水平，基于炸药预置裂缝燃烧演化压力历程分析，对某HMX基PBX炸药裂缝燃烧的增压过程开展了理论计算。采用气体动力学相关理论建立了简化的炸药燃烧产物流动模型，基于一维等熵流动假设预测了不考虑黏性和摩擦阻力情况下炸药预置裂缝的燃烧压力增长过程，计算结果显示压力增长阶段与实验结果定性符合，为理解炸药裂缝燃烧的增压行为提供了一种理论解释。
- 炸药裂缝 /
- 对流燃烧 /
- 增压 /
- 等熵流动
Abstract: The aim of this paper is to deep understand the pressurization behavior in evolution of crack burning, and promote the acknowledge level for transition mechanism of high intensity reaction in projectile fillings under accidental ignition. Based on qualitative analysis for pressure evolution in explosive crack burning, theoretical calculation is carried out for the pressurization process in crack burning of a HMX-based PBX (with a content of 95% for HMX). Simplified flow model for explosive burning products has been set up based on gas dynamic theory. With the hypothesis of one-dimensional isentropic flow, crack pressurization process has been predicted without regard to viscosity and friction resistance. The calculation result is qualitatively accord with experimental result in pressurization stage, providing a theoretical explanation for understanding the pressurization behavior in crack burning.
- explosive crack /
- convective burning /
- pressurization /
- isentropic flow

HTML全文

图 1 炸药预置裂缝燃烧实验装置图

Figure 1. Experiment device for burning in preformed explosive cracks

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图 2 200 μm宽裂缝燃烧压力阶段划分

Figure 2. Different stages of pressure from the 200 μm width crack burning experiment

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图 3 阶段Ⅱ中裂缝燃烧演化示意图

Figure 3. Schematic diagram of combustion evolution in stage Ⅱ

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图 4 阶段Ⅲ中裂缝燃烧演化示意图

Figure 4. Schematic diagram of combustion evolution in stage Ⅲ

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图 5 裂缝中气体一维流动示意图

Figure 5. Schematic diagram of one dimensional gas flow in cracks

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图 6 计算流程示意图

Figure 6. Schematic of the calculation process

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图 7 理论计算的200 μm宽裂缝燃烧压力与实验结果对比

Figure 7. Comparison between pressures from theoretical calculation and experiments of 200 μm width crack burning

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