Abstract
The pseudospectral time-domain method has long been used to describe the acoustical wave propagation. However, due to the limitation and difficulties of the FFT, the dispersion error is hard to be avoided and the computational accuracy greatly decreases after the waves arrive at the non-periodic boundary. To resolve this problem, the Lagrange-Chebyshev interpolation polynomials are used to replace the previous FFT. In addition, a mapping method is introduced to overcome the additional time-step restriction. In this paper, several issues are addressed to explore its numerical performances: the numerical accuracy, computational efficiency and stability of this proposed method.
Original language | English |
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Title of host publication | 14th International Congress on Sound and Vibration 2007, ICSV 2007 |
Pages | 180-187 |
Number of pages | 8 |
Volume | 1 |
Publication status | Published - 1 Dec 2007 |
Event | 14th International Congress on Sound and Vibration 2007, ICSV 2007 - Cairns, QLD, Australia Duration: 9 Jul 2007 → 12 Jul 2007 |
Conference
Conference | 14th International Congress on Sound and Vibration 2007, ICSV 2007 |
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Country/Territory | Australia |
City | Cairns, QLD |
Period | 9/07/07 → 12/07/07 |
ASJC Scopus subject areas
- Acoustics and Ultrasonics