| RDX激光点火的一维气相模型 |
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| 引用本文： | 田占东,张震宇,卢芳云,谭福利. RDX激光点火的一维气相模型[J]. 高压物理学报, 2011, 25(2): 138-142 |
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| 作者姓名： | 田占东 张震宇 卢芳云 谭福利 |
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| 作者单位： | 1. 国防科技大学理学院技术物理研究所，湖南长沙 410073；2. 中国工程物理研究院流体物理研究所，四川绵阳 621900 |
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| 摘 要： | 为了研究含能材料RDX在激光作用下的点火特性,在Liau等人的工作基础上,考虑了物理参数随温度和组分浓度的变化,建立了RDX激光点火的气相模型.利用有限差分方法,计算了激光功率密度为400 W/cm2、环境压力为0.1 MPa时RDX的点火过程.结果表明:约90%的RDX以蒸发的形式进入气相,另外的10%在液相中发生分...
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| 关 键 词： | 激光点火 RDX 点火延迟时间 数值计算 |
| 收稿时间： | 2010-02-11; |
One-Dimensional Gas-Phase Reaction Model of Laser-Induced Ignition of RDX |
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| TIAN Zhan-Dong,ZHANG Zhen-Yu,LU Fang-Yun,TAN Fu-Li. One-Dimensional Gas-Phase Reaction Model of Laser-Induced Ignition of RDX[J]. Chinese Journal of High Pressure Physics, 2011, 25(2): 138-142 |
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| Authors: | TIAN Zhan-Dong ZHANG Zhen-Yu LU Fang-Yun TAN Fu-Li |
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| Affiliation: | 1. Institute of Technical Physics, College of Science, National University of Defense Technology, Changsha 410073, China;2. Institute of Fluid Physics, CAEP, Mianyang 621900, China |
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| Abstract: | Based on the work of Liau et al., a one-dimensional gas-phase reaction model of laser-induced ignition of RDX was established by considering the variations of physical parameters with temperature and component concentration. Using this gas-phase reaction model and finite difference method, the ignition characteristics of RDX ignited by laser radiation of 400 W/cm2 power density at 0.1 MPa and 300 K were investigated. The calculated results showed that about 90% RDX transform to gas phase by evaporation and the remaining 10% decompose in condensed phase. With the accumulation of reactant and increase of temperature, the reaction rate increases gradually and finally the gas phase is ignited at about 10 ms, which is consistent with the results reported in previous literatures. |
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| Keywords: | laser-induced ignition RDX ignition delay time numerical simulation |
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