.png){kind=icon}
返回
Improved Algebraic Preconditioning for Multiscale Electromagnetic Problems
.png){kind=icon}
PRE
AI
DOI：10.1109/LAWP.2016.2641927.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
An improved scheme for the algebraic preconditioners is proposed in this letter to accelerate the iterative convergence rate of the multiscale electromagnetic problems, in which the overcrowded leaf boxes of the multilevel fast multipole algorithm are recursively bisected with the application of the multilevel accelerated Cartesian expansion algorithm to maintain the computational efficiency. Due to a lack of some strong couplings measured by the relative distance between the testing/basis functions, the algebraic preconditioners constructed by filtering the near-field interaction matrix of the fast algorithm are consequently ineffective. To alleviate the adverse effect of the multiscale-size boxes, the proposed scheme constructs the preconditioners on higher levels rather than the leaf level of the related fast algorithm, thus speeding up the iterative convergence rate significantly. Moreover, the rank-revealing adaptive cross approximation algorithm is first introduced to compute and store the enlarged computational domain of the preconditioner. As a result, there is only a modest increase in the computational cost. Numerical experiments have been performed to demonstrate the effectiveness and efficiency of the proposed method.
Keyword:
Adaptive cross approximation (ACA)
algebraic preconditioner
multilevel accelerated Cartesian expansion (MLACE)
multilevel fast multipole algorithm (MLFMA)
multiscale problems
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
4.8
论文数:
1.0W
被引数:
2.8W
机构
暂无机构信息
引用论文
.png){kind=icon}
分享收藏AN EFFICIENT HIGH ORDER MULTILEVEL FAST MULTIPOLE ALGORITHM FOR ELECTROMAGNETIC SCATTERING ANALYSIS
OAAI
OAAI分享收藏Synthesis and Characterization of Naphthalene End-Capped Divinylbenzene for OTFT萘封端的二乙烯基苯的合成与表征及其在OTFT中的应用
PREAI
分享收藏
查看更多内容