An Improved Procedure for Selecting the Profiles of Perfectly Matched Layers
Jiawei Zhang
TL;DR
This paper presents an enhanced method for selecting PML profiles in frequency domain wave simulations, optimizing discrete reflectivity through an extended function class and direct search, improving upon previous procedures.
Contribution
It introduces a novel procedure that extends the function class and uses direct search to better select PML profiles for traveling wave simulations.
Findings
Improved PML profile selection reduces discrete reflectivity.
Enhanced method outperforms previous procedures in accuracy.
Applicable to frequency domain wave propagation problems.
Abstract
The perfectly matched layers (PMLs), as a boundary termination over an unbounded spatial domain, are widely used in numerical simulations of wave propagation problems. Given a set of discretization parameters, a procedure to select the PML profiles based on minimizing the discrete reflectivity is established for frequency domain simulations. We, by extending the function class and adopting a direct search method, improve the former procedure for traveling waves.
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Taxonomy
TopicsElectromagnetic Simulation and Numerical Methods · Microwave Engineering and Waveguides · Electromagnetic Scattering and Analysis