On generalized discrete PML optimized for propagative and evanescent waves
Vladimir Druskin, Murthy Guddati, Thomas Hagstrom
TL;DR
This paper introduces a unified spectrally matched optimal grid method for finite-difference and finite-element PMLs, effectively absorbing both evanescent and propagative waves in wave simulations.
Contribution
It presents a novel unified approach that optimizes PML grids for better absorption of all wave types, improving simulation accuracy.
Findings
Enhanced absorption of evanescent waves
Improved accuracy for propagative waves
Unified grid approach benefits multiple methods
Abstract
We suggest a unified spectrally matched optimal grid approach for finite-difference and finite-element approximation of the PML. The new approach allows to combine optimal discrete absorption for both evanescent and propagative waves.
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Taxonomy
TopicsElectromagnetic Simulation and Numerical Methods · Microwave Engineering and Waveguides · Electromagnetic Scattering and Analysis