激光烧蚀瑞利－泰勒不稳定性模拟
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摘要: 给出了激光烧蚀流体不稳定性计算程序EUL2D的物理方程,介绍了计算中使用的活动网格和一些技术问题处理。EUL2D程序的计算结果与Takabe公式、FAST2D程序和LASNEX程序的结果较好符合。数值计算日本大阪大学激光烧蚀瑞利－泰勒不稳定性实验,再现了实验结果。发现了横向电子热传导烧蚀在长波长扰动的非线性瑞利－泰勒不稳定性演变中起重要作用。Abstract: Physical equations of laser ablative hydrodynamic instability in the code EUL2D is given. Slide grids and some techniques in the calculation is reported. Simulation results of the EUL2D code are good agreements with those of the Takabe formula, the FAST2D code and the LASNEX code. Our numerical simulation reproduced the experimental result of laser ablative Rayleigh-Taylor instability in Osaka University. It is discovered that lateral ablation of electron conduction plays an important role in nonlinear evolution of the Rayleigh-Taylor instability with a longer wavelength ．
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Key words:
- rayleigh-taylor instability /
- laser ablation /
- high-resolution scheme /
- slide grids
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