微喷射现象数值模拟研究进展概述

邵建立; 何安民; 王裴

doi:10.11858/gywlxb.20190786

微喷射现象数值模拟研究进展概述

doi: 10.11858/gywlxb.20190786

邵建立^1,,
何安民²,
王裴^2,*, ,

1.
北京理工大学爆炸科学与技术国家重点实验室，北京　100081
2.
北京应用物理与计算数学研究所，北京　100094

基金项目: 国家自然科学基金委员会-中国工程物理研究院“NSAF”联合基金（U1530216）；科学挑战专题（TZ2016001）；北京理工大学青年教师学术启动计划

详细信息

作者简介:
邵建立（1979－），男，博士，特别研究员，主要从事材料动态力学响应理论研究. E-mail：shao_jianli@bit.edu.cn

通讯作者:
王　裴（1975－），男，博士，研究员，主要从事材料动态力学响应、多介质混合理论研究. E-mail：wangpei@iapcm.ac.cn

中图分类号: O521.2
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出版历程
- 收稿日期: 2019-05-28
- 修回日期: 2019-05-30

Brief Review of Research Progress on Numerical Simulation of Ejection Phenomena

SHAO Jianli^1
,,
HE Anmin²,
WANG Pei^{2,*
, ,}

1.
Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
Institute of Applied Physics and Computational Mathematics, Beijing 100094, China

摘要

摘要: 对微喷射现象的国内外数值模拟研究进行了简要梳理与总结。首先，对微喷射现象特征及其物理内涵进行了解读，然后分别从分子动力学和连续介质力学层次，概述了微射流和微层裂两种主要物质喷射机制的数值模拟研究进展，最后归纳了微喷射现象数值模拟研究仍存在的一些难点问题。希望能为微喷射及相关领域的数值模拟与建模研究提供有益参考。
- 微喷射 /
- 冲击 /
- 分子动力学 /
- 连续介质力学
Abstract: In this paper, the research progress on numerical simulation of ejection phenomena at home and abroad is briefly reviewed and summarized. Firstly, the characteristics of ejection phenomena and its physical connotation are explained. Then, the molecular dynamics studies and continuum mechanics studies on the two main ejection mechanisms, microjet and microspallation, are respectively summarized. At last, some difficult problems in the numerical study of ejection phenomena are summarized. We hope this paper can provide useful reference for related numerical simulation or modeling research.
- ejection /
- shock /
- molecular dynamics /
- continuum mechanics

HTML全文

图 1 冲击波作用下可能的喷射物形成机制^[9]

Figure 1. Illustration of possible ejecta formation mechanisms^[9]

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图 2 铅（a、b、c）和钢（d）表面喷射物照片^[10]

Figure 2. Photographs of the ejection of particles from the free surfaces of lead (a, b, c) and steel (d)^[10]

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图 3 喷射物形成机制随冲击压力的变化

Figure 3. Variation of the formation mechanism of ejecta with shock pressure

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图 4 喷射系数（α）随时间的变化^[33]

Figure 4. Time evolution of the ejected mass coefficient （α）^[33]

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图 5 微射流喷射图像以及喷射系数（R）和头部速度（v_h）随粒子速度的变化^[35]

Figure 5. Microscopic views of microjet formation and variation of the microjetting factor (R) and the head velocity of the microjet (v_h) with the particle velocity^[35]

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图 6 不同沟槽角度对应的微射流及其物质来源^[38]

Figure 6. Microjets and their sources for different half angles^[38]

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图 7 微射流破碎过程模拟图像^[39，43]

Figure 7. Snapshots of microjet breakup process from MD simulations^[39，43]

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图 8 微射流喷射系数（R）随冲击压力（P_SB）的变化^[45]

Figure 8. Variation of microjetting factor (R) with shock-breakout pressure(P_SB)^[45]

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图 9 喷射系数(R)随衰减速率的变化和强衰减冲击下微射流与微层裂共存图像^[47]

Figure 9. Microjetting factor (R) and microscopic views of microjet and microspall under strong decaying shock^[47]

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图 10 内部和表面微层裂图像及破坏物质对应的初始宽度（w_d）^[50]

Figure 10. Views of interior microspalls and surface microspall and the Lagrangian width of the damaged zone (w_d)^[50]

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图 11 熔化前后损伤状态转变的微观图像^[52]

Figure 11. Microscopic views of damage before melting and after melting^[52]

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图 12 SPH模拟的微射流形成过程^[55]

Figure 12. SPH simulation of microjet formation process^[55]

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图 13 微射流喷射系数（R）和最大喷射速度（v_{e, m}）随加载波前沿上升时间的变化^[56]

Figure 13. Variations of jetting factor（R）and the maximum jetting velocity (v_{e, m}) with the wave-front rise time^[56]

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图 14 微射流头部速度（v_h）和喷射系数（R）随沟槽半角（α）的变化^[57]

Figure 14. Head velocity of microjet (v_h) and the jetting factor（R）change with the half angle of groove (α)^[57]

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图 15 样品表面缺陷形貌（a）和微喷射累计质量(M_LJ)（b）^[58]

Figure 15. The profile of the surface defect (a) and the cumulative mass (M_LJ) of ejection (b)^[58]

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图 16 三角波加载下微喷射SPH模拟图像^[60]

Figure 16. SPH simulation of microjet views driven by decaying shock^[60]

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图 17 欧拉模拟得到的喷射状态的不同区域^[61]

Figure 17. Different regions of jetting state given by Euler simulation^[61]

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图 18 微射流CM和MD模拟结果比较^[64]

Figure 18. Comparison of CM and MD simulation results of microjet^[64]

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图 19 SPH模拟与MD模拟及实验结果比较^[66]

Figure 19. Comparison of SPH simulation, MD simulation and experimental results^[66]

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图 20 DNS和MD模拟片状射流的比较^[67]

Figure 20. Comparison of the ejected sheets obtained with MD and DNS^[67]

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