论文标题
磁性等离子体中低频电磁波动的旋转模拟模型
A Gyrokinetic Simulation Model for Low Frequency Electromagnetic Fluctuations in Magnetized Plasmas
论文作者
论文摘要
我们提出了一种新模型，用于模拟电磁波动的频率远低于限制在一般磁性构型中的等离子体中的离子回旋频率。这个新型模型（称为GK-E＆b）采用了以电磁场配方的非线性陀螺仪方程，以及用于解决场的动量平衡方程。因此，它不仅包括动力学效应，例如波粒相互作用和显微镜（离子Larmor半径尺度）物理学；但在计算上也比在电势方面所描述的常规配方更有效。作为基准，我们进行了线性以及动力学alfven波的非线性模拟。证明物理学与分析理论一致。
We present a new model for simulating the electromagnetic fluctuations with frequencies much lower than the ion cyclotron frequency in plasmas confined in general magnetic configurations. This novel model (termed as GK-E&B) employs nonlinear gyrokinetic equations formulated in terms of electromagnetic fields along with momentum balance equations for solving fields. It, thus, not only includes kinetic effects, such as wave-particle interaction and microscopic (ion Larmor radius scale) physics; but also is computationally more efficient than the conventional formulation described in terms of potentials. As a benchmark, we perform linear as well as nonlinear simulations of the kinetic Alfven wave; demonstrating physics in agreement with the analytical theories.
