| 基于强度介质Richtmyer-Meshkov不稳定性理论的微缺陷喷射模型 |
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| 引用本文： | 何安民,刘军,邵建立,刘超,王裴.基于强度介质Richtmyer-Meshkov不稳定性理论的微缺陷喷射模型[J].计算物理,2018,35(5):505-514. |
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| 作者姓名： | 何安民 刘军 邵建立 刘超 王裴 |
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| 作者单位： | 北京应用物理与计算数学研究所, 北京 100094 |
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| 基金项目： | 国家自然科学基金（11402032和U1530261）和中国工程物理研究院科技发展基金（2015B0201039）资助项目 |
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| 摘 要： | 采用二维多介质欧拉弹塑性流体动力学程序，对金属界面Richtmyer-Meshkov不稳定性和物质喷射进行流体动力学模拟分析，得到强度效应对界面扰动增长和物质喷射的影响特征，揭示扰动增长与物质喷射之间的内在联系.基于理想弹塑性固体界面Richtmyer-Meshkov不稳定性理论，建立强度介质微喷射形成临界判据、喷射总量和最大速度的理论模型.
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| 关 键 词： | 微喷射 强度介质 Richtmyer-Meshkov不稳定性 |
| 收稿时间： | 2017-07-03 |
| 修稿时间： | 2017-09-20 |
Theoretical Ejecta Model for Elastic-Plastic Solids Based on Richtmyer-Meshkov Instability |
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| HE Anmin,LIU Jun,SHAO Jianli,LIU Chao,WANG Pei.Theoretical Ejecta Model for Elastic-Plastic Solids Based on Richtmyer-Meshkov Instability[J].Chinese Journal of Computational Physics,2018,35(5):505-514. |
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| Authors: | HE Anmin LIU Jun SHAO Jianli LIU Chao WANG Pei |
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| Institution: | Institute of Applied Physics and Computational Mathematics, Beijing 100094, China |
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| Abstract: | Hydrodynamic simulations are performed to study Richtmyer-Meshkov instability (RMI) and material ejection at a metal-vacuum interface using a 2D multi-component elastic-plastic hydrodynamic Eulerian code. Effect of material strength on instability development of roughened surface is analyzed, and relationship between amount of ejected material and saturated bubble amplitude is revealed. Finally, based on RMI theory for elastic-plastic solids, theoretical models to describe critical condition of ejecta formation, total amount and maximum velocity of ejecta from unmelted metals are established. |
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| Keywords: | ejecta elastic-plastic solid Richtmyer-Meshkov instability |
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