Open AccessStretched‐coordinate PML in 2D TLM simulations
Author(s) -
Odeyemi Jomiloju S.,
Vukovic Ana,
Benson Trevor M.,
Sewell Phillip
Publication year - 2020
Publication title -
iet science, measurement and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.418
H-Index - 49
eISSN - 1751-8830
pISSN - 1751-8822
DOI - 10.1049/iet-smt.2019.0340
Subject(s) - lossless compression , perfectly matched layer , lossy compression , transmission line , computer science , transformation (genetics) , coordinate system , finite difference time domain method , electronic engineering , rlc circuit , transmission (telecommunications) , algorithm , topology (electrical circuits) , physics , optics , data compression , voltage , engineering , telecommunications , electrical engineering , artificial intelligence , biochemistry , chemistry , quantum mechanics , gene , capacitor
A novel implementation of the stretched coordinate perfectly matched layer (PML) is presented for the two‐dimensional (2D) transmission line modelling (TLM) method. The formulation offers a unified approach and is based on the mapping of the TLM node to a complex stretched domain for which the resulting transformation of the constituent RLC transmission line components is elaborated. The transformation is shown to modify the TLM connect‐scatter algorithm. The absorption performance is demonstrated by simulating a canonical waveguide test case. Unlike the existing split‐field based TLM‐PML implementations, which are better suited to lossless media, the numerical results obtained show the proposed PML formulation is effective in the termination of both lossy and lossless media.