Optimal Configurations for Perfectly Matched Layers in FDTD Simulations

Xisto Lucas Travassos (1) , Sergio Luciano Avila (1, 2) , D. Prescott (3) , Alain Nicolas (1) , Laurent Krähenbühl (1)

1 CEGELY - Centre de génie électrique de Lyon
2 GRUCAD - Grupo de concepção e analise de dispositivos eletromagnéticos
3 Defense Science and Technology Organization

To be effective a perfectly matched layer (PML) must be reflectionless to all impinging waves over a broad band of frequencies whilst not overly increasing the computational burden. This can be difficult to achieve as one must find a balance between the discretization error, the number of PML layers and the reflection coefficient. This work presents an optimized solution for simulating PMLs for the finite-difference time-domain (FDTD) technique using both the mono-objective genetic algorithm (GA) and multiobjective genetic algorithm (MGA). The main goal is to implement a tool capable of finding the best choice of parameters for the conductivity profile to achieve a minimum for both the reflection and computation time.

Mots clés: Error estimation; genetic algorithm (GA); numerical techniques; optimization; FDTD; Perfectly matched layer

Domaines: Autre; Modélisation et simulation; Electromagnétisme

Xisto Lucas Travassos, Sergio Luciano Avila, D. Prescott, Alain Nicolas, Laurent Krähenbühl. Optimal Configurations for Perfectly Matched Layers in FDTD Simulations. IEEE Transactions on Magnetics, 2006, 42 (4), pp.563-566. ⟨10.1109/TMAG.2006.871471⟩. ⟨hal-00111254⟩