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Dynamical energy analysis for built-up acoustic systems at high frequencies.

Chappell, D. and Giani, S. and Tanner, G. (2011) 'Dynamical energy analysis for built-up acoustic systems at high frequencies.', Journal of the Acoustical Society of America., 130 (3). pp. 1420-1429.

Abstract

Standard methods for describing the intensity distribution of mechanical and acoustic wave fields in the high frequency asymptotic limit are often based on flow transport equations. Common techniques are statistical energy analysis, employed mostly in the context of vibro-acoustics, and ray tracing, a popular tool in architectural acoustics. Dynamical energy analysis makes it possible to interpolate between standard statistical energy analysis and full ray tracing, containing both of these methods as limiting cases. In this work a version of dynamical energy analysis based on a Chebyshev basis expansion of the Perron-Frobenius operator governing the ray dynamics is introduced. It is shown that the technique can efficiently deal with multi-component systems overcoming typical geometrical limitations present in statistical energy analysis. Results are compared with state-of-the-art hp-adaptive discontinuous Galerkin finite element simulations.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1121/1.3621041
Publisher statement:© 2011 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in Chappell, D., Giani, S. and Tanner, G. (2011) 'Dynamical energy analysis for built-up acoustic systems at high frequencies.', Journal of the Acoustical Society of America., 130(3): 1420-1429 and may be found at http://dx.doi.org/10.1121/1.3621041.
Record Created:13 Nov 2015 14:20
Last Modified:16 Nov 2015 10:40

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