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Computational electromagnetics

About: Computational electromagnetics is a research topic. Over the lifetime, 6412 publications have been published within this topic receiving 113727 citations. The topic is also known as: Electromagnetic field analysis.


Papers
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Journal ArticleDOI
TL;DR: In this paper, a surface-based partial element equivalent circuit (PEEC) formulation is presented to complement the existing volume-based method, which is more efficient for many problems in terms of the number of unknowns generated.
Abstract: The partial element equivalent circuit (PEEC) formulation is an integral-equation-based approach for the solution of combined circuit and electromagnetic (EM) problems. In this paper, a surface-based PEEC formulation is presented to complement the existing volume-based method. With the rise in the operating frequencies and the increasing complexity of test structures on boards, packages, and chips, a surface-based formulation is more efficient for many problems in terms of the number of unknowns generated. The composite conductor dielectric modeling is based on the PMCHWT formulation which is transformed into a PEEC representation using equivalent magnetic and electric circuits connected by mutual coupling. Both time- and frequency-domain analyses are discussed, similar to a Spice-type circuit solver. The new formulation is compared with the volume-based PEEC approach in terms of accuracy and the number of unknowns generated

60 citations

Journal ArticleDOI
TL;DR: In this article, a review of electromagnetic models of the lightning return stroke is presented, with an emphasis on their applications in light of the fact that electromagnetic models allow a self-consistent full-wave solution for both current distribution along the lightning channel and associated electromagnetic fields.
Abstract: Lightning return-stroke models are needed to study lightning effects on various objects and systems, as well as in characterizing the lightning electromagnetic environment. Reviewed here are models based on Maxwell's equations and referred to as electromagnetic models. In contrast to distributed-circuit and so-called engineering models, electromagnetic models of the lightning return stroke allow a self-consistent full-wave solution for both current distribution along the lightning channel and associated electromagnetic fields. In this paper, we review electromagnetic models with an emphasis on their applications.

60 citations

Journal ArticleDOI
TL;DR: The tree structure of MLFMA is distributed among the processors by partitioning both the clusters and the samples of the fields appropriately for each level, and the parallelisation efficiency is significantly improved compared to previous approaches.
Abstract: A hierarchical parallelisation of the multilevel fast multipole algorithm (MLFMA) for the efficient solution of large-scale problems in computational electromagnetics is presented The tree structure of MLFMA is distributed among the processors by partitioning both the clusters and the samples of the fields appropriately for each level The parallelisation efficiency is significantly improved compared to previous approaches, where only the clusters or only the fields are partitioned in a level

60 citations

Journal ArticleDOI
TL;DR: In this article, the authors used the numerical electromagnetics code (NEC-2) to analyze the three-dimensional electromagnetic (EM) field around thin wires in the frequency domain.
Abstract: Numerical Electromagnetics Code (NEC-2), which is a computer code to analyze the three-dimensional electromagnetic (EM) field around thin wires in the frequency domain, has been successfully used in lightning-related studies such as lightning surge analyses or lightning EM pulse calculations over a perfectly conducting ground. NEC-2 is still more useful in investigating lightning-induced effects over ground of finite conductivity. This application of NEC-2 is investigated by comparing calculated results with an experiment over lossy ground. The advantages of the analysis using NEC-2 are that it can accurately compute the current distribution along a wire structure with small amount of postulation. It automatically incorporates coupling between a lightning channel and transmission lines, and it can also take account of finitely conducting ground in transient condition. In addition, it can also model conductors in any arbitrary angles, and it is available in the public domain.

59 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202325
2022101
2021153
202091
2019109
2018107