A wave-based finite element analysis for acoustic transmission in fluid-filled elastic waveguides
Peplow, Andrew T LU
(2009)
In The Journal of the Acoustical Society of America
125(4).
p.63-2053
- Abstract
This paper describes an original numerical prediction technique developed for the analysis of coupled vibro-acoustic problems in fluid waveguides. Specifically it is a wave-based method that adopts a spectral element approach. Unlike the conventional element-based methods, this technique uses wave functions that satisfy the governing equations to describe the dynamic variables exactly. One advantage is that fine domain discretizations, used by element-based methods near the fluid-structure interface typically, are no longer required. Hence the resulting model sizes are much smaller than element-based methods yielding a more time-efficient prediction technique that may allow handling of mid-frequency applications. Another advantage is... (More)
This paper describes an original numerical prediction technique developed for the analysis of coupled vibro-acoustic problems in fluid waveguides. Specifically it is a wave-based method that adopts a spectral element approach. Unlike the conventional element-based methods, this technique uses wave functions that satisfy the governing equations to describe the dynamic variables exactly. One advantage is that fine domain discretizations, used by element-based methods near the fluid-structure interface typically, are no longer required. Hence the resulting model sizes are much smaller than element-based methods yielding a more time-efficient prediction technique that may allow handling of mid-frequency applications. Another advantage is that dispersion relations between propagating and excitation wavenumbers are easily obtained, and an example to show this, as well as a discussion on how the wave-based prediction technique can be used for two coupled vibro-acoustic problems: a cavity with a non-reflecting boundary and a silencer duct problem, is presented. Its beneficial characteristics compared to element-based methods are demonstrated through the validation study and transmission loss examples.
(Less)
- author
- Peplow, Andrew T
LU
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- in
- The Journal of the Acoustical Society of America
- volume
- 125
- issue
- 4
- pages
- 11 pages
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- scopus:64649090346
- pmid:19354381
- ISSN
- 1520-8524
- DOI
- 10.1121/1.3087430
- language
- English
- LU publication?
- no
- id
- 8ea48825-ec8a-4d5e-890b-3eec4374da7c
- date added to LUP
- 2021-01-20 18:23:26
- date last changed
- 2024-01-03 05:35:33
@article{8ea48825-ec8a-4d5e-890b-3eec4374da7c,
abstract = {{<p>This paper describes an original numerical prediction technique developed for the analysis of coupled vibro-acoustic problems in fluid waveguides. Specifically it is a wave-based method that adopts a spectral element approach. Unlike the conventional element-based methods, this technique uses wave functions that satisfy the governing equations to describe the dynamic variables exactly. One advantage is that fine domain discretizations, used by element-based methods near the fluid-structure interface typically, are no longer required. Hence the resulting model sizes are much smaller than element-based methods yielding a more time-efficient prediction technique that may allow handling of mid-frequency applications. Another advantage is that dispersion relations between propagating and excitation wavenumbers are easily obtained, and an example to show this, as well as a discussion on how the wave-based prediction technique can be used for two coupled vibro-acoustic problems: a cavity with a non-reflecting boundary and a silencer duct problem, is presented. Its beneficial characteristics compared to element-based methods are demonstrated through the validation study and transmission loss examples.</p>}},
author = {{Peplow, Andrew T}},
issn = {{1520-8524}},
language = {{eng}},
number = {{4}},
pages = {{63--2053}},
publisher = {{American Institute of Physics (AIP)}},
series = {{The Journal of the Acoustical Society of America}},
title = {{A wave-based finite element analysis for acoustic transmission in fluid-filled elastic waveguides}},
url = {{http://dx.doi.org/10.1121/1.3087430}},
doi = {{10.1121/1.3087430}},
volume = {{125}},
year = {{2009}},
}