等离子体粒子模拟双时标算法

DOUBLE-TIME-SCALE CIC ALGORITHMS FOR SIMULATION OF PLASMAS

给出能节省1/2-1/4费用的等离子体粒子模拟双时标算法,方法是用小步长积分电子运动方程,用大步长积分离子运动方程。已在一维半电磁粒子云模拟程序CIC-R上实现双时标算法。理论分析和计算机模拟结果肯定了这个算法的稳定性和正确性。

In this paper we present a double -time-scale cloud-in-cell (CIC) algorithm for simulation of plasmas which reduce by half-quarter computational cost of standard CIC methods . The algorithm is integrating electrons by small time steps and integrating ions by large steps. The algorithm have been used in one and a half-dimensional CIC scheme. The results of theoretic analysis and simulation support the stability and correctness of the algorithm.