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A new Continuous Hugoniot Method for the numerical study of shock waves.

机译:一种用于冲击波数值研究的新的连续Hugoniot方法。

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摘要

This work outlines and applies a new simulation method for the efficient study of shock wave fronts. This novel approach achieves a significantly improved efficiency in the generation of individual steady-state shock front states, and allows for the study of shocks as a function of a continuous shock strength parameter, vp. This is, to our knowledge, the first attempt to map the continuous Hugoniot curve.; The Continuous Hugoniot Method is applied to shock single-crystal Lennard-Jonesium along the 100> direction. Excellent agreement is found with both the published Lennard-Jones Hugoniot, and results of traditional shock simulation methods presented in this work.; The method is further applied to study the shock melt of single-crystal beta-tin along the 100> direction, using the Modified Embedded Atom Method (MEAM). Our continuum of Sn shock state results shows good agreement, within 6%, with the individual shock data points provided by experiment and agree perfectly with traditional shock simulation methods. Temperature profiles, density profiles, and melt length scales are determined as a function of shock strength.
机译:这项工作概述并应用了一种新的模拟方法,以有效地研究激波波阵面。这种新颖的方法在生成单个稳态冲击波前态时可显着提高效率,并且可以根据连续冲击强度参数vp研究冲击。据我们所知,这是绘制连续Hugoniot曲线的首次尝试。连续Hugoniot方法应用于沿<100>方向震荡的单晶Lennard-Jonesium。与已发表的Lennard-Jones Hugoniot以及本工作中介绍的传统冲击模拟方法的结果都发现了极好的一致性。使用改进的嵌入式原子方法(MEAM),将该方法进一步应用于研究沿<100>方向的单晶β-锡的冲击熔体。我们的连续Sn冲击状态结果与实验提供的单个冲击数据点显示出良好的一致性,在6%以内,并且与传统的冲击模拟方法完全吻合。确定温度曲线,密度曲线和熔体长度比例作为冲击强度的函数。

著录项

  • 作者

    Lane, James Matthew Doyle.;

  • 作者单位

    The University of Texas at Austin.;

  • 授予单位 The University of Texas at Austin.;
  • 学科 Physics Condensed Matter.
  • 学位 Ph.D.
  • 年度 2005
  • 页码 180 p.
  • 总页数 180
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 O49;
  • 关键词

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