A new charge conservation method in electromagnetic particle-in-cell simulations
A new charge conservation method in electromagnetic particle-in-cell simulations
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DOI：
10.1016/s0010-4655(03)00437-5
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发表时间：
2003-12
影响因子：
6.3
通讯作者：
T. Umeda;Y. Omura;T. Tominaga;H. Matsumoto
中科院分区：
文献类型：
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作者：
T. Umeda;Y. Omura;T. Tominaga;H. Matsumoto
本文提出了一种快速求解电池内电磁粒子（PIC）模拟中满足电荷连续性方程的电流密度的算法。在电荷守恒的PIC模拟中，一个时间步长的粒子轨迹通常被假设为一条直线。在目前的新方案中，我们假设粒子轨迹是一条之字形线。与villasenoro - buneman方法和Esirkepov方法相比，该方案在计算速度上具有优势，且不存在实质性的物理畸变。
We developed a fast algorithm for solving the current density satisfying the continuity equation of charge in electromagnetic particle-in-cell (PIC) simulations. In PIC simulations of the charge conservation, a particle trajectory over one time step is conventionally assumed to be a straight line. In the present new scheme we assume that a particle trajectory is a zigzag line. Compared with the Villasenor–Buneman method and Esirkepov's method, the present scheme has an advantage in computation speed without any substantial distortion of physics.