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Title: A numerical study of sound-structure interaction in a duct structure by the acoustical wave propagator method
Authors: Peng, S
Cheng, L 
Issue Date: 2007
Source: 14th International Congress on Sound and Vibration 2007, ICSV 2007, 2007, v. 1, p. 180-187 How to cite?
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.
Description: 14th International Congress on Sound and Vibration 2007, ICSV 2007, Cairns, QLD, 9-12 July 2007
ISBN: 9781627480000
Appears in Collections:Conference Paper

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