A Fast Tree Algorithm for Electric Field Calculation in Electrical Discharge Simulations

被引：8
|
作者：
Zhuang, Chijie [1 ]
Zhang, Yong [2 ]
Zhou, Xin [1 ]
Zeng, Rong [1 ]
He, Jinliang [1 ]
Liu, Lei [3 ]
机构：
[1] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China
[2] NYU, Courant Inst Math Sci, New York, NY 10011 USA
[3] China Southern Grid Elect Power Res Inst, Guangzhou 510663, Guangdong, Peoples R China
来源：
IEEE TRANSACTIONS ON MAGNETICS | 2018年 / 54卷 / 03期
基金：
中国国家自然科学基金; 奥地利科学基金会;
关键词：
Disc model; electric field; electrical discharge; error estimation; tree algorithm; DISCONTINUOUS GALERKIN METHOD;
D O I：
10.1109/TMAG.2017.2756991
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The simulation of electrical discharges has been attracting a great deal of attention. In such simulations, the electric field computation dominates the computational time. In this paper, we propose a fast tree algorithm that helps to reduce the time complexity from O(N-2) (from using direct summation) to O(N log N). The implementation details are discussed and the time complexity is analyzed. A rigorous error estimation shows the error of the tree algorithm decays exponentially with the number of truncation terms and can be controlled adaptively. Numerical examples are presented to validate the accuracy and efficiency of the algorithm.
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页数：4
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