Research on the Dynamic Model of Plasma Ignition Process of Solid Propellant

Research on the Dynamic Model of Plasma Ignition Process of Solid Propellant
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固体推进剂等离子体点火过程动力学模型研究

DOI:
10.1109/tps.2019.2903853
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发表时间:
2019-03
影响因子:
1.5
通讯作者:
Jia Shenli
Jia Shenli
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Wang Qian;Hang yuhua;Li Xingwen;Jia Shenli

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近几十年来,等离子点火技术以其独特的优点引起了人们的广泛关注。然而,固体推进剂等离子体点火的数值研究还很有限。本文建立了固体推进剂一维瞬态等离子体点火模型。该模型采用XM39的简化化学反应机理,探讨了固相和气相化学反应以及气相中的组分输运。研究了等离子体射流的膨胀过程。预测的表面压力和点火延迟的实验结果进行了比较。与这些数据的良好协议提供了必要的验证所提出的模型。在该模型中,计算的温度分布和气体黑索今的质量分数分布被用来表征反应区。此外,还利用CH2O和HCN的质量分数分布估算了不同反应路径的可能性。
In decades, the plasma ignition technology has drawn much attention due to its advantages. However, the numerical research on the plasma ignition of solid propellants is still limited. In this paper, a 1-D transient plasma ignition model of solid propellant is developed. A simplified chemical reaction mechanism of XM39 is employed in the model to explore the solid phase and gas phase chemical reactions and species transportations in the gas phase. The expansion process of the plasma jet is also investigated. The predicted surface pressure and ignition delay are compared to the experimental results. Good agreement with these data provides the necessary validation of the presented model. In the model, the calculated temperature profiles and the mass fraction distribution of the gas hexogen are used to characterize the reaction zone. In addition, the mass fraction distributions of CH2O and HCN are used to estimate the possibilities of different reaction paths.
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