Split-component PML absorbing conditions for SS-TLM

✍ Scribed by S. Le Maguer; M. M. Ney

• Book ID: 102383206
• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 339 KB
• Volume: 17
• Category: Article
• ISSN: 0894-3370
• DOI: 10.1002/jnm.541

✦ Synopsis

Abstract

Known as alternate direct implicit (ADI) or split‐step (SS) schemes, a new class of time‐domain algorithms has recently been proposed. Their salient feature concerns their numerical stability, regardless the time‐step used. Thus, significant computational advantages can be obtained when non‐uniform mesh is used. To study open structures or determine S‐parameters, absorbing boundary conditions (ABC) have to be used. The perfectly matched layers (PML) technique based on split field component is implemented for the SS‐TLM algorithm. The complete set of updating equations is provided and the new PML is validated. It is shown to provide high accuracy even better than that of classical PML‐TLM scheme. In addition, it is found that using a high time‐step does not seem to degrade significantly the accuracy of PML. Thus, the PML technique is very well adapted to SS‐TLM as confirmed by various applications. Finally, unlike all classical TLM‐PML schemes, the technique is found to be stable. Copyright © 2004 John Wiley & Sons, Ltd.