A wave-based analysis for acoustic transmission for fluid-filled elastic waveguides
Peplow, Andrew LU
(2009)
8th European Conference on Noise Control 2009, EURONOISE 2009
In 8th European Conference on Noise Control 2009, EURONOISE 2009 - Proceedings of the Institute of Acoustics
31(PART 3).
- Abstract
This paper describes an original numerical prediction technique developed for the analysis of coupled vibro-acoustic problems in fluid waveguides. Specifically it is is a wave-based method. 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... (More)
This paper describes an original numerical prediction technique developed for the analysis of coupled vibro-acoustic problems in fluid waveguides. Specifically it is is a wave-based method. 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 wavenumbers and excitation wavenumbers are easily obtained and an example to show this is presented. Also a discussion on how the wave-based prediction technique can be used for coupled vibro-acoustic problems a cavity with a non-reflecting boundary and a complex silencer duct problem. Its beneficial characteristics compared to element-based methods are demonstrated through the validation study and transmission loss examples.
(Less)
- author
- Peplow, Andrew
LU
- publishing date
- 2009
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 8th European Conference on Noise Control 2009, EURONOISE 2009 - Proceedings of the Institute of Acoustics
- series title
- 8th European Conference on Noise Control 2009, EURONOISE 2009 - Proceedings of the Institute of Acoustics
- volume
- 31
- issue
- PART 3
- edition
- PART 3
- pages
- 5 pages
- conference name
- 8th European Conference on Noise Control 2009, EURONOISE 2009
- conference location
- Edinburgh, United Kingdom
- conference dates
- 2009-10-26 - 2009-10-28
- external identifiers
-
- scopus:84864694018
- ISBN
- 9781615676804
- language
- English
- LU publication?
- no
- id
- 8e6b366f-4200-4a8e-8a0a-b25d0ef959de
- date added to LUP
- 2021-02-08 10:11:50
- date last changed
- 2022-02-01 20:05:22
@inproceedings{8e6b366f-4200-4a8e-8a0a-b25d0ef959de,
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 is a wave-based method. 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 wavenumbers and excitation wavenumbers are easily obtained and an example to show this is presented. Also a discussion on how the wave-based prediction technique can be used for coupled vibro-acoustic problems a cavity with a non-reflecting boundary and a complex silencer duct problem. Its beneficial characteristics compared to element-based methods are demonstrated through the validation study and transmission loss examples.</p>}},
author = {{Peplow, Andrew}},
booktitle = {{8th European Conference on Noise Control 2009, EURONOISE 2009 - Proceedings of the Institute of Acoustics}},
isbn = {{9781615676804}},
language = {{eng}},
number = {{PART 3}},
series = {{8th European Conference on Noise Control 2009, EURONOISE 2009 - Proceedings of the Institute of Acoustics}},
title = {{A wave-based analysis for acoustic transmission for fluid-filled elastic waveguides}},
volume = {{31}},
year = {{2009}},
}