强激光与粒子束, 2014, 26 (9): 095003, 网络出版: 2014-09-15
内爆圆柱套筒磁通量压缩的磁流体力学计算
Magneto-hydrodynamic calculation of magnetic flux compression using imploding cylindrical liners
内爆 一维反应流体动力学 爆炸磁通量聚积 磁扩散 磁流体力学 imploding one-dimensional reactive hydrodynamic flux accumulation by explosion magnetic field diffusion magneto-hydrodynamic
摘要
在一维反应流体动力学程序SSS的基础上扩充编制一维磁流体力学计算编码SSS/MHD,并对炸药内爆驱动的圆柱形套筒磁通量聚积发生器(MC-1装置)进行了一维磁流体力学模拟计算。分析了空腔磁场向压缩套筒和样品套筒壁中的磁扩散现象,结果表明,在压缩套筒壁中距离空腔0.2 mm处的磁感应强度最大值只有十几T;而在样品套筒壁中距离空腔0.2 mm处的磁感应强度最大值达到几百T,这主要是内外套筒运动速度不同,电磁力与内爆作用力平衡引起的。计算了空腔中磁感应强度的变化曲线和样品套筒内壁的速度历程曲线,得到与实验测试符合的结果。
Abstract
Based on the one-dimensional elastic-plastic reactive hydrodynamic code SSS, the one-dimensional magneto-hydynamics code SSS/MHD is successfully developed. And calculation is done for cylindrical magneto cumulative generators (MC-1 device). The magnetic field diffusion into liner and sample tuber is analyzed, and the result shows that the maximum value of magnetic induction intension to cavity 0.2 mm in liner is only sixteen Tesla, while the one in sample tuber is several hundred Tesla, which is caused by balance of electromagnetism force and imploding one for the different velocity of liner and sample tuber. The curves of magnetic induction intension on axes of cavity and the velocity history on the wall of sample tuber are calculated according to the experiment results. The works in this paper accounting for that code SSS/MHD can be applied to experiment configures of detonation, shock and electromagnetism load and improvement of parameters. The experiment data can be estimated, analyzed and checked, and the physics course of correlative device can be understood deeply, according to SSS/MHD.
赵继波, 孙承纬, 谷卓伟, 罗浩. 内爆圆柱套筒磁通量压缩的磁流体力学计算[J]. 强激光与粒子束, 2014, 26(9): 095003. Zhao Jibo, Sun Chengwei, Gu Zhuowei, Luo Hao. Magneto-hydrodynamic calculation of magnetic flux compression using imploding cylindrical liners[J]. High Power Laser and Particle Beams, 2014, 26(9): 095003.