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Numerical Modelling of Electromagnetic Waves by Explicit Multi-Level Time-Step FEM-BEM Coupling Procedures

Delfim Soares Jr.1
Faculty of Engineering, Federal University of Juiz de Fora, Cidade Universitária, CEP 36036-330, Juiz de Fora, MG, Brazil. Tel: +55 32 2102-3468; E-mail: delfim.soares@ufjf.edu.br

Computer Modeling in Engineering & Sciences 2009, 44(2), 157-176. https://doi.org/10.3970/cmes.2009.044.157

Abstract

The numerical modelling of electromagnetic waves by finite element - boundary element coupling procedures is discussed here, taking into account time-domain approaches. In this study, the global model is divided into different sub-domains and each sub-domain is analysed independently and explicitly at each time-step of the analysis: the interaction between the different sub-domains of the global model is accomplished by interface procedures. A multi-level time-step algorithm is considered in order to improve the flexibility, accuracy and stability (especially when conditionally stable time-marching procedures are employed) of the coupled analysis. At the end of the paper, numerical examples are presented, illustrating the potentialities and robustness of the proposed methodologies.

Keywords

Finite Elements, Boundary Elements, Time-Domain Analysis, Multi-Level Time-Steps, Electromagnetic Waves, Green-Newmark Method.

Cite This Article

Jr., D. S. (2009). Numerical Modelling of Electromagnetic Waves by Explicit Multi-Level Time-Step FEM-BEM Coupling Procedures. CMES-Computer Modeling in Engineering & Sciences, 44(2), 157–176.



This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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