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Broadband Electromagnetic Scattering Analysis with Isogeometric Boundary Element Method Accelerated by Frequency-Decoupling and Model Order Reduction Techniques

Yujing Ma¹, Zhongwang Wang², Xiaohui Yuan¹, Leilei Chen^2,*

1 College of Architecture and Civil Engineering, Xinyang Normal University, Xinyang, 464000, China
2 School of Architecture and Civil Engineering, Huanghuai University, Zhumadian, 463003, China

* Corresponding Author: Leilei Chen. Email:

The International Conference on Computational & Experimental Engineering and Sciences 2023, 27(2), 1-2. https://doi.org/10.32604/icces.2023.09662

Abstract

The paper presents a novel fast calculation method for broadband Electromagnetic Scattering analysis. In this work, the isogeometric boundary element method is used to solve Helmholtz equations for the electromagnetic scattering problems. The non-uniform rational B-splines are employed to construct structural geometries and discretize electric and magnetic field integral equations [1,2]. To avoid timeconsuming multi-frequency calculations, the series expansion method is used to decouple the frequencydependent terms from the integrand in the boundary element method [3,4]. The second-order Arnoldi (SOAR) method is applied to construct a reduced-order model that retains the essential structures and key properties of the original model for large-scale problems [5-7]. Several numerical examples are presented to demonstrate the correctness and effectiveness of the proposed algorithms.

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Keywords

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