带隔板装药爆轰波马赫反射理论研究和数值模拟
发布时间：2019-01-23 13:35
【摘要】：基于三波理论和Whitham方法对带隔板装药爆轰波相互作用后发生的正规反射和非正规反射进行了理论分析,给出了爆轰波发生马赫反射时临界入射角和马赫杆增长角等参数的变化规律,提出了马赫杆高度的计算模型。基于凝聚炸药爆轰Jones-Wilkins-Lee(JWL)模型和冲击起爆的Lee-Tarver模型,利用有限元计算软件对带隔板装药爆轰波的传播过程进行了数值模拟。结果表明,发生马赫反射后,随着爆轰波的传播,马赫杆的高度不断增加。数值模拟结果与理论计算结果吻合较好,说明本文中采用的理论模型和数值模拟方法能够较准确地描述带隔板装药爆轰波马赫反射的传播过程。
[Abstract]:Based on the three-wave theory and the Whitham method, the normal reflection and the non-formal reflection after the detonation wave interaction with the partition plate are theoretically analyzed, and the variation law of the critical angle of incidence and the growth angle of the Mach rod is given. The calculation model of the height of the Mach rod is proposed. In this paper, the propagation process of the detonation wave with the partition plate is simulated by the finite element method based on the J-Wilkins-Lee (JWL) model and the Lee-Tarver model of the impact initiation. The results show that after Mach reflection, the height of the Mach rod is increasing with the propagation of the detonation wave. The numerical simulation results are in good agreement with the theoretical calculation results, and the theoretical model and the numerical simulation method used in this paper can be used to describe the propagation process of the detonation wave Mach reflection with the partition plate.
【作者单位】： 南京理工大学机械工程学院;
【基金】：中央组织部青年拔尖人才支持计划项目(2014年) 中央高校基本科研业务费专项项目(30916011305)
【分类号】：O38
[Abstract]:Based on the three-wave theory and the Whitham method, the normal reflection and the non-formal reflection after the detonation wave interaction with the partition plate are theoretically analyzed, and the variation law of the critical angle of incidence and the growth angle of the Mach rod is given. The calculation model of the height of the Mach rod is proposed. In this paper, the propagation process of the detonation wave with the partition plate is simulated by the finite element method based on the J-Wilkins-Lee (JWL) model and the Lee-Tarver model of the impact initiation. The results show that after Mach reflection, the height of the Mach rod is increasing with the propagation of the detonation wave. The numerical simulation results are in good agreement with the theoretical calculation results, and the theoretical model and the numerical simulation method used in this paper can be used to describe the propagation process of the detonation wave Mach reflection with the partition plate.
【作者单位】： 南京理工大学机械工程学院;
【基金】：中央组织部青年拔尖人才支持计划项目(2014年) 中央高校基本科研业务费专项项目(30916011305)
【分类号】：O38
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