磁驱动单侧飞片实验的数值模拟

磁驱动单侧飞片实验的数值模拟通常可不考虑厚的阴极的运动状态和厚度方向上烧蚀宽度的影响，采用单侧计算模型进行模拟。为了理解磁驱动单侧飞片实验可采用单侧计算模型的原因，为磁驱动单侧飞片实验的单侧计算建模提供理论依据，建立了磁驱动单侧飞片实验的双侧计算模型，并对PTS-061、PTS-064磁驱动单侧飞片实验进行了模拟分析。在PTS-061、PTS-064实验中，飞片的电流加载面的位移随着时间的增加持续增大；厚的阴极的电流加载面的位移不随时间的增加持续增大，在磁驱动实验中后期基本保持不变。PTS-061实验结束时，飞片的电流加载面的位移为4.9 mm，阴极电流加载面的位移仅为1.7 mm。PTS-064实验结束时，飞片的电流加载面的位移为4.1 mm，阴极电流加载面的位移仅为0.9 mm。磁驱动单侧飞片实验能采用单侧计算模型模拟的原因，不是阴极板面保持位置不动，而是阴极电流加载面的位移不随时间持续增加；在磁驱动实验后期，飞片电流加载面位移对边界磁场的影响远大于阴极电流加载面的位移对边界磁场的影响。

Simulation on magnetically-driven one-sided flyer plate experiments

The numerical simulation of magnetically driven one-sided flyer plate experiment usually does not take into account the influences of cathode motion and ablation width in the thickness direction on the boundary magnetic field. Hence, one-sided computational model was usually applied to simulate magnetically driven one-sided flyer plate experiment. In order to understand the reason why magnetically driven one-sided flyer plate experiment can be simulated by one-sided computational model, magnetically driven one-sided flyer plate experiment (experiment PTS-061 with a 0.972-mm-thick aluminum flyer plate and experiment PTS-064 with a 1.041-mm-thick aluminum flyer plate) were simulated by two-sided computational model. In the experiments with experiment PTS-061 and PTS-064, displacement of thin flyer plate current-loading surface increases with time; displacement of thick cathode current-loading surface does not increases with time, and remains basically unchanged with small displacement in the middle and late stage of experiments. At the end of experiment PTS-061, displacement of thin flyer plate current-loading surface is 4.9 mm, and displacement of thick cathode current-loading surface is only 1.7 mm. At the end of experiment PTS-064, displacement of thin flyer plate current-loading surface is 4.1 mm, and displacement of thick cathode current-loading surface is only 0.9 mm. The reason of one-sided computational model can be adopted in magnetically driven one-sided flyer plate experiment is not that cathode plate position remains unchanged, but instead that cathode current-loading surface has smaller displacement remaining basically unchanged in the middle and later stage of experiments, and the displacement of thin flyer plate current-loading surface has a greater influence on the boundary magnetic field that of thick cathode current-loading surface in the late stage of experiments.