在拉格朗日坐标系下,建立了描述Z箍缩等离子体内爆动力学过程的一维三温辐射磁流体力学方程组,并编制了相应的拉氏程序.利用该程序对美国Sandia实验室Saturn装置上的铝丝阵列内爆实验进行了数值模拟,得到了内爆等离子体各参量的时空分布.其中内爆到心时刻、X光峰值功率、X光总能量等计算结果与实验结果基本一致.表明所建立的物理模型和编制的程序是合理和可靠的.

The equations of onedimensional threetemperature radiation magnetohydrodynamics, which are to describe the plasma process of Zpinch, were set up under Largrangian coordinates. The Al wirearray Zpinch experiment on Saturn in Sandia laboratory in USA, was simulated using our onedimensional lagrangian code based on the equations. The reasonable and selfconsistent spatiotemporal distributions of all plasma parameters in the process were obtained. The time and velocity of Zpinch plasma to center, pulse width and energy of Xray radiated by the Zpinch plasma are basically agreed with the experimental results on Saturn. The results suggested that the equations and its code are correct.