Dynamical energy analysis for built-up acoustic systems at high frequencies.
J Acoust Soc Am
; 130(3): 1420-9, 2011 Sep.
Article
en En
| MEDLINE
| ID: mdl-21895083
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.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Sonido
/
Acústica
/
Arquitectura y Construcción de Instituciones de Salud
/
Modelos Teóricos
Tipo de estudio:
Prognostic_studies
/
Risk_factors_studies
Idioma:
En
Revista:
J Acoust Soc Am
Año:
2011
Tipo del documento:
Article
País de afiliación:
Reino Unido