Self-Tuning Locally-Conformal PML Mesh Truncation for 3D Vector Finite Element Method

Date

2023-01-01

Author

ÖZGÜN, ÖZLEM
Kuzuoğlu, Mustafa
Mittra, Raj

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This paper presents a novel formulation of the locally-conformal perfectly matched layer (PML) method, called LCPML-log, which uses a logarithmic decay function. The method is designed to solve electromagnetic radiation and scattering problems using the 3D vector finite element method (FEM). LCPML-log has two distinct features that distinguish it from previous PML implementations. Firstly, it does not require any parameter adjustments to optimize its performance, making it self-tuning. Secondly, it needs only a single layer, which makes it cost-effective as it reduces the number of unknowns within the PML layer. The proposed method is formulated for the vector FEM based on edge basis functions for 3D scattering problems, and its effectiveness is demonstrated through numerical results.

Subject Keywords

Computational Electromagnetics (CEM), coordinate stretching, edge basis functions, electromagnetic radiation and scattering, Finite Element Method (FEM), Locally-Conformal Perfectly Matched Layer (LCPML), vector wave equation

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85178063854&origin=inward
https://hdl.handle.net/11511/106647

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Department of Electrical and Electronics Engineering, Article