Nonlinear Ionization Instability of Plasma in Inert Gas Cycle Direct Power Generation
Nonlinear Ionization Instability of Plasma in Inert Gas Cycle Direct Power Generation
复制标题
惰性气体循环直接发电中等离子体的非线性电离不稳定性
DOI：
10.1143/jjap.34.683
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发表时间：
1995
影响因子：
1.5
通讯作者：
S. Kabashima
中科院分区：
文献类型：
--
作者：
K. Yasui;V. M. Zubtsov;K. Yoshikawa;S. Kabashima
基于双温模型对盘式惰性气体循环直接(ICD)发电机中非平衡磁流体力学(MHD)等离子体的电离不稳定性进行了数值模拟。当扰动的幅度超过临界值时，等离子体是亚稳态的，并且变得不稳定。向非稳态的转变还依赖于扰动波的方向，计算结果与理论吻合较好。通过二维数值计算，揭示了等离子体不稳定时的不均匀结构现象。
Ionization instability of nonequilibrium magnetohydrodynamic (MHD) plasma in a disk-type inert gas cycle direct (ICD) power generator has been examined by numerical simulation based on the two-temperature model. The plasma is metastable and becomes unstable when the amplitude of disturbances exceeds a critical value. Transition to an unstable state also depends on the direction of the disturbance wave, and the result shows good agreement with theory. Appearances of inhomogeneous structures when the plasma is unstable are revealed by two-dimensional numerical calculation.