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Evaluation of the Perfectly Matched Layer for Computational Acoustics

✍ Scribed by Quan Qi; Thomas L. Geers

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 315 KB
Volume: 139
Category: Article
ISSN: 0021-9991
DOI: 10.1006/jcph.1997.5868

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✦ Synopsis

The perfectly matched layer (PML) recently formulated by Berenger for the absorption of radiated/scattered waves in computational electromagnetics is adapted to computational acoustics, and its effectiveness as a nonreflecting boundary is examined. The excellent absorbing ability of the PML is demonstrated by its small reflection coefficient for a plane wave incident on a plane interface. However, additional frequency-domain and time-domain solutions show that the PML may not be an appropriate computational boundary if the analyst is only interested in the response of the radiator/scatterer and/or the acoustic field in the vicinity of the radiator/scatterer.

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