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A Polynomial Chaos Method for Dispersive Electromagnetics 公开 Deposited

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https://ir.library.oregonstate.edu/concern/articles/7p88cj21h

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Abstract
  • Electromagnetic wave propagation in complex dispersive media is governed by the time dependent Maxwell’s equations coupled to equations that describe the evolution of the induced macroscopic polarization. We consider “polydispersive” materials represented by distributions of dielectric parameters in a polarization model. The work focuses on a novel computational framework for such problems involving Polynomial Chaos Expansions as a method to improve the modeling accuracy of the Debye model and allow for easy simulation using the Finite Difference Time Domain (FDTD) method. Stability and dispersion analyzes are performed for the approach utilizing the second order Yee scheme in two spatial dimensions.
  • Keywords: relaxation time distribution, FDTD, Debye polarization, Maxwell's equations
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  • Gibson, N. L. (2015). A Polynomial Chaos Method for Dispersive Electromagnetics. Communications in Computational Physics, 18(05), 1234-1263. doi:10.4208/cicp.230714.100315a
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  • 18
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  • 5
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  • Aspects of this work were completed by the author while advising undergraduate students in the Mathematics REU Program at Oregon State University, funded by NSF-DMS Grant No. 0852030.
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