Cooper, JD, Valavanis, A, Ikonic, Z et al. (2 more authors) (2013) Stable perfectly-matched-layer boundary conditions for finite-difference time-domain simulation of acoustic waves in piezoelectric crystals. Journal of Computational Physics, 253. 239 - 246. ISSN 0021-9991
Abstract
Perfectly matched layer (PML) boundary conditions are derived for finite-difference time-domain analysis of acoustic waves within piezoelectric crystals. The robustness and effectiveness of the derived boundary conditions are demonstrated by simulating acoustic wave propagation in the bismuth germanate material system—a system in which simple absorbing boundary conditions cause instabilities. An investigation into the stability and effectiveness of the PML is then presented in terms of the PML thickness and absorption profile. A range of optimised absorption profiles were determined by finding the maximum permissible absorption within the stability limit of the system. In the optimised case, the form of the absorption profile had little influence on the effectiveness of the PML. However, in the unoptimised case the linearly increasing absorption profile was found to be the most effective.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2013, Elsevier. This is an author produced version of a paper published in the Journal of Computational Physics. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Finite-difference time-domain; Acoustic wave; Perfectly matched layer; Piezoelectric crystal |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 03 Sep 2013 11:36 |
Last Modified: | 15 Sep 2014 03:08 |
Published Version: | http://dx.doi.org/10.1016/j.jcp.2013.07.019 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.jcp.2013.07.019 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:76342 |