Perfectly Matched Layer for Cole-Cole Dispersive Media in DGTD Method

Simulating electromagnetic waves within biological tissues is critical for assessing electromagnetic effects in biological environment. Precise modeling of biological tissues in computational electromagnetics is therefore necessary. The Cole-Cole dispersive model based on the fractional power functi...

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Published inIEEE journal on multiscale and multiphysics computational techniques Vol. 9; pp. 320 - 329
Main Authors Qin, Xuebin, Wu, Xuan, Wang, Shuo, Zhao, Xiaoying, Zhou, Yuanguo, Ren, Qiang
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Bioelectric phenomena
Bioelectromagnetic modeling
Biological effects
Biological system modeling
Biological tissues
Cole-Cole dispersive model
Computational electromagnetics
discontinuous Galerkin time domain (DGTD) method
Dispersion
Electromagnetic modeling
Electromagnetic radiation
Finite difference methods
Finite difference time domain method
Frequency ranges
Mathematical models
Maxwell's equations
Media
Method of moments
perfectly matched layer (PML)
Perfectly matched layers
Time-domain analysis
Tissues
Wave dispersion
Wave propagation
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Summary:Simulating electromagnetic waves within biological tissues is critical for assessing electromagnetic effects in biological environment. Precise modeling of biological tissues in computational electromagnetics is therefore necessary. The Cole-Cole dispersive model based on the fractional power functions can more accurately describe the electrical characteristics of biological tissues in a wide frequency range than the typical dispersive model based on the integer power functions. Previous research on the time-domain simulation of the Cole-Cole medium is mainly based on the finite difference time domain (FDTD) method. Recently, researchers proposed a DEH scheme (Maxwell's equations with field variables D, E and H) discontinuous Galerkin time domain (DGTD) method to simulate wave propagation in the Cole-Cole dispersive media. However, it lacks the perfectly matched layer (PML) to truncate the Cole-Cole background media. This paper fills this gap by developing a PML for Cole-Cole background media in the DGTD method.
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ISSN:2379-8815
2379-8815
DOI:10.1109/JMMCT.2024.3462529