| 强激光对靶材烧蚀效应的数值模拟研究 |
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| 引用本文： | 汤文辉,冉宪文,徐志宏,张若棋.强激光对靶材烧蚀效应的数值模拟研究[J].航天器环境工程,2010,27(1):32-34. |
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| 作者姓名： | 汤文辉 冉宪文 徐志宏 张若棋 |
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| 作者单位： | 1.国防科学技术大学 理学院技术物理研究所，长沙 410073 |
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| 摘 要： | 强激光烧蚀是一个复杂的物理化学过程，包括质量迁移、相变、运动边界等诸多复杂因素。如果靶为复合材料，烧蚀机理更加复杂，而且很难找到共性规律，这对数值计算方法提出了较高的要求。文章介绍了强激光烧蚀的理论基础、烧蚀模型以及对强激光烧蚀进行数值模拟的无网格方法（光滑粒子动力学方法，即SPH方法）。采用了SPH方法对典型靶的激光烧蚀进行了数值模拟，并给出了单层铝靶和环氧树脂/铝双层靶在激光辐照下的烧蚀形貌与温度场。计算结果表明，在不同材料的交界面，烧蚀将沿径向发展。
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| 关 键 词： | 强激光 烧蚀 温度场 热应力 SPH方法 程序设计 |
| 收稿时间： | 2009/9/29 0:00:00 |
Numerical simulation of high intensity laser ablation of materials |
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| Tang Wenhui,Ran Xianwen,Xu Zhihong and Zhang Ruoqi.Numerical simulation of high intensity laser ablation of materials[J].Spacecraft Environment Engineering,2010,27(1):32-34. |
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| Authors: | Tang Wenhui Ran Xianwen Xu Zhihong and Zhang Ruoqi |
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| Institution: | 1.Institute of Technical Physics, College of Science, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | High intensity laser ablation is a coplex physical and chemical process involving many complicated factors,such as mass removal,phase transition and dynamical boundary conditions.If the ablating target is a composite,the mechanism of laser ablation will be further complicated and it is hard to find a general solution.Only a numerical method may simulate this process perfectly.Based on the theory and the model of high intensity laser ablation,and the method of smoothed particle hydrodynamics(SPH),a meshfree ... |
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| Keywords: | high intensity laser ablation temperature field thermal stress method of smoothed particle hydrodynamics programming |
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