强激光与粒子束, 2012, 24 (12): 2802, 网络出版: 2013-01-14
激光辐照柱体铝靶的三维光滑粒子流体动力学仿真
Three-dimensional smoothed particle hydrodynamics numerical simulation of laser irradiating columnar aluminum target
连续激光 光滑粒子流体动力学 边界条件 数值模拟 CW laser smoothed particle hydrodynamics boundary condition numerical simulation
摘要
在现有光滑粒子流体动力学方法基础上,提出了结合差分方法处理激光辐照边界条件的方法,并利用此方法自编程序模拟计算了功率密度为5.0×109 W/cm2的强连续激光辐照铝靶时的热-力学效应,准确给出了与激光作用的边界粒子的分布和飞散情况,同时给出了不同时刻靶体的温度场,得到了温度分布规律,并对结果进行了分析。
Abstract
Smoothed particle hydrodynamics (SPH) is a typical meshless particle method. However, the heat flux boundary of laser radiation in SPH method is a big problem which dues to the difficulty of determining particles which receive the laser’s energy in a time-step. In this paper, the problem is solved by the difference method, and a three-dimensional program LAMP (laser ablation material program) is compiled with FORTRAN language to numerical simulate the interaction between 5.0×109 W/cm2 continuous wave laser and a columnar aluminum target. The boundary particles which receive the laser’s energy are accurately determined, and temperature distributions at different time in the target are obtained.
陈华, 汤文辉, 冉宪文, 徐志宏, 周浩, 徐彬彬. 激光辐照柱体铝靶的三维光滑粒子流体动力学仿真[J]. 强激光与粒子束, 2012, 24(12): 2802. Chen Hua, Tang Wenhui, Ran Xianwen, Xu Zhihong, Zhou Hao, Xu Binbin. Three-dimensional smoothed particle hydrodynamics numerical simulation of laser irradiating columnar aluminum target[J]. High Power Laser and Particle Beams, 2012, 24(12): 2802.