计算物理 ›› 2021, Vol. 38 ›› Issue (1): 47-56.DOI: 10.19596/j.cnki.1001-246x.8190

• 研究论文 • 上一篇    下一篇

基于Mie-Grüneisen状态方程的爆轰波运动数值模拟

吴宗铎1, 严谨1, 宗智2, 庞建华3, 高云4   

  1. 1. 广东海洋大学海洋工程学院, 广东 湛江 524088;
    2. 大连理工大学船舶工程学院, 辽宁 大连 116024;
    3. 广东海洋大学深圳 研究院, 智能海洋工程中心, 广东 深圳 518055;
    4. 西南石油大学, 油气藏地质及开发工程国家重点实验室, 四川 成都 610500
  • 收稿日期:2020-01-02 修回日期:2020-07-07 出版日期:2021-01-25 发布日期:2021-01-25
  • 作者简介:吴宗铎(1984-),男,博士,讲师,E-mail:wuzongduo0@aliyun.com
  • 基金资助:
    国家自然科学基金(11702066,5179030)资助项目

Numerical Simulation of Detonation Wave Motion Based on Mie-Grüneisen Equation of State

WU Zongduo1, YAN Jin1, ZONG Zhi2, PANG Jianhua3, GAO Yun4   

  1. 1. College of Ocean Engineering, Guangdong Ocean University, Zhanjiang, Guangdong 524088, China;
    2. Department of Naval Architecture, Dalian University of Technology, Dalian, Liaoning 116024, China;
    3. Ocean Intelligence Technology Center, Shenzhen Institute of Guangdong Ocean University, Shenzhen, Guangdong 518055, China;
    4. State Key Laboratory of Oil and Gas Reservoir Gelogy and Exploration, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • Received:2020-01-02 Revised:2020-07-07 Online:2021-01-25 Published:2021-01-25

摘要: 依据C-J(Chapman-Jouguet)理论,对爆轰问题中的气态爆轰产物和未反应炸药分别考虑不同的参考状态,并根据参考状态选用特定的Mie-Grüneisen状态方程。忽略化学反应过程,爆轰产物厚度为零的前导激波面以界面的形式存在。数值模拟中,爆轰波的演化分为波面传播以及与未反应介质相互作用两个部分。传播过程中,爆轰波的传播速度即恒定的爆速,爆轰产物在传播过程中瞬间形成,而相互作用过程则是通过Mie-Grüneisen多介质混合模型来计算爆轰波的持续冲击作用。借助于Mie-Grüneisen状态方程以及Mie-Grüneisen多介质混合模型,可以很好地模拟爆轰波的运动过程。对比理论参数及文献的计算结果发现,模拟结果具备较好的准确度。

关键词: 爆轰波, C-J理论, Mie-Grü, neisen方程, 爆速

Abstract: Based on C-J (Chapman-Jouguet) theory different reference states of gaseous detonation products and unreacted explosives in detonation problem are considered. According to these reference states, specific Mie-Grüneisen EOS (equation of states) is selected. As chemical reaction process is neglected, a zero-thickness section of guided shock wave exists as an interface in front of the detonation wave. In numerical simulation, evolution of detonation wave includes two parts:Propagation of wave section, as well as interaction with unreacted medium. In the propagation process, speed is defined as the constant detonation speed, and detonation products forms instantly. In the interaction process, Mie-Grüneisen mixture model is employed to simulate continuous impact of detonation wave. With Mie-Grüneisen EOS, as well as the Mie-Grüneisen mixture model, motion of detonation wave is simulated well. Comparing with related theoretical data and numerical results good performance was found.

Key words: detonation wave, C-J theory, Mie-Grüneisen equation, detonation speed

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