MHD Modeling of Shock Physics Experiments with the PHELIX Portable High Magnetic Field Drive

2018 16th International Conference on Megagauss Magnetic Field Generation and Related Topics (MEGAGAUSS) Pub Date : 2018-09-01 DOI:10.1109/MEGAGAUSS.2018.8722663

C. Rousculp, M. Freeman, T. Voorhees, D. Fredenburg, J. Griego, D. Oró, A. Patten, J. Bradley, R. Reinovsky, P. M. Donovan, J. Dunwoody, F. Fierro, J. C. Lamar, F. Mariam, L. Neukirch, R. Randolph, W. Reass, A. Saunders, S. Sjue, Z. Tang, P. Turchi

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引用次数: 1

Abstract

The PHELIX portable pulsed power driver has recently completed a set of experiments examining the response of granular material to convergent shock loading. Here a nearly 4 MA peak current is delivered to a Z-pinch load with a quarter wave cycle time of ~3 μs. This produces B ~ 0.30 MG field at the surface of a ~3 cm diameter, 1 mm thick, 3 cm tall Al liner. The liner is accelerated to ~800 km/s before shock impacting a target cylinder filled with fine-grain CeO2 powder. Design and analysis simulations are performed with 2D MHD Lagrangian/ALE code to predict the liner performance and material response. Computational results are compared to the PHELIX Faraday rotation measurements for load current as well as proton radiographic imaging of the evolution of the density profile in the CeO2.

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PHELIX便携式强磁场驱动器冲击物理实验的MHD建模

philix便携式脉冲功率驱动器最近完成了一组实验，检测颗粒材料对会聚冲击载荷的响应。在这里，在四分之一波周期时间为~3 μs的情况下，向z夹紧负载提供了近4 MA的峰值电流。这就在一个直径~ 3cm、厚度1mm、高3cm的铝衬垫表面产生了B ~ 0.30 MG的磁场。在冲击冲击填充细粒CeO2粉末的靶筒之前，衬垫被加速到~800 km/s。采用二维MHD拉格朗日/ALE代码进行设计和分析仿真，以预测衬垫性能和材料响应。计算结果与PHELIX法拉第旋转测量的负载电流以及CeO2中密度分布演变的质子射线成像进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 16th International Conference on Megagauss Magnetic Field Generation and Related Topics (MEGAGAUSS)

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