A domain decomposition parallelization scheme for the Poisson equation in particle-in-cell simulation

被引：0
|
作者：
Mao, Renfan [1 ]
Ren, Junxue [2 ]
Tang, Haibin [2 ,3 ,4 ]
Li, Zhihui [5 ,6 ]
机构：
[1] Beihang Univ, Sch Space & Environm, Beijing 102206, Peoples R China
[2] Beihang Univ, Sch Astronaut, Beijing 102206, Peoples R China
[3] Minist Educ, Key Lab Spacecraft Design Optimizat & Dynam Simula, Beijing 102206, Peoples R China
[4] Minist Ind & Informat Technol, Lab Space Environm Monitoring & Informat Proc, Beijing 102206, Peoples R China
[5] China Aerodynam Res & Dev Ctr, Mianyang 621000, Sichuan, Peoples R China
[6] Beihang Univ, Natl Lab Computat Fluid Dynam, Beijing 100191, Peoples R China
来源：
COMPUTER PHYSICS COMMUNICATIONS | 2025年 / 310卷
关键词：
Particle-in-cell; Poisson-like problems; Domain decomposition; Schwarz method; Electrostatic field; ALGORITHMS;
D O I：
10.1016/j.cpc.2025.109527
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A novel domain decomposition parallelization scheme for solving the Poisson equation in explicit electrostatic particle-in-cell (PIC) plasma simulation is proposed in this paper. Using the Schwarz method, the original problem is transformed into a mapping process on a series of subsets of unknowns, thereby reducing the original problem to a problem with much fewer unknowns. The solver using this scheme will have explicit parallelism brought by domain decomposition and near theoretical scalability benefiting from low communication cost. A two-dimensional Poisson solver code is developed and a series of tests are implemented to verify its correctness and performance. This scheme can provide effective performance improvement for electrostatic PIC simulations.
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收藏
页数：9
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