Structural/acoustic interaction in air-conditioning ducts in the presence of mean flow

Kirby, R; Cummings, A

Structural/acoustic interaction in air-conditioning ducts in the presence of mean flow

Kirby, R

Cummings, A

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Publication Type:: Conference Proceeding
Citation:: Proceedings of the 23rd International Conference on Noise and Vibration Engineering, ISMA, 1998, pp. 809 - 816
Issue Date:: 1998-12-01

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Field	Value	Language
dc.contributor.author	Kirby, R https://orcid.org/0000-0002-3520-1377	en_US
dc.contributor.author	Cummings, A	en_US
dc.date.issued	1998-12-01	en_US
dc.identifier.citation	Proceedings of the 23rd International Conference on Noise and Vibration Engineering, ISMA, 1998, pp. 809 - 816	en_US
dc.identifier.isbn	9073802679	en_US
dc.identifier.isbn	9789073802674	en_US
dc.identifier.uri	http://hdl.handle.net/10453/117891
dc.description.abstract	The finite element method is applied to the modelling of noise breakout from air-conditioning ducts which are rectangular in cross-section and lined with a bulk reacting sound absorbent. Mean flow in the central airway is also included in the model. An eigenvalue formulation is employed to couple the acoustic pressure field inside the duct to the displacement of the duct walls. Numerical predictions for the axial wavenumbers of the first "structural" and "acoustic" modes are examined both with and without mean flow.	en_US
dc.relation.ispartof	Proceedings of the 23rd International Conference on Noise and Vibration Engineering, ISMA	en_US
dc.title	Structural/acoustic interaction in air-conditioning ducts in the presence of mean flow	en_US
dc.type	Conference Proceeding
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US

Abstract:

The finite element method is applied to the modelling of noise breakout from air-conditioning ducts which are rectangular in cross-section and lined with a bulk reacting sound absorbent. Mean flow in the central airway is also included in the model. An eigenvalue formulation is employed to couple the acoustic pressure field inside the duct to the displacement of the duct walls. Numerical predictions for the axial wavenumbers of the first "structural" and "acoustic" modes are examined both with and without mean flow.

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http://hdl.handle.net/10453/117891