【摘要】 研制可靠的数值模拟工具对Z箍缩内爆产生X光辐射过程进行理论研究、实验分析以及负载设计至关重要。介绍了2维三温辐射磁流体力学程序(MARED)的物理方案,给出了MARED程序的1维检验结果,验证表明MARED程序适用不同装置条件、不同负载参数。结合丝阵Z箍缩实验的数值模拟和分析表明:相同负载质量条件下,钨丝阵内爆产生的X光辐射功率远大于铝丝阵产生的X光功率;相同负载电流条件下,负载质量越大,计算得到X光功率越低;X光功率随着负载电流增加而增加。更多还原

【Abstract】 The physical model of a two-dimensional three-temperature radiation magneto-hydrodynamics code,named MARED,is introduced.The code’s 1 D simulation results are also presented,which include results for different currents and load parameters on facilities of Saturn and Qiangguang-Ⅰ.The plasma parameters’ spatio-temporal distributions are obtained,and their self-consistent dynamic variations suggest that MARED code applies to simulations on different pulse power facilities and load conditions.By comparing results with different load materials,it is found that X-ray power of tungsten wire-array implosion is greater than that of aluminium wire-array for the same load mass.In addition,MARED simulations also show that the calculated X-ray power goes up with the load current,and goes down if the load mass is increasing.更多还原