Modelling sound radiation from an axial fan in a finite length duct

Kirby, R; Duan, W

Modelling sound radiation from an axial fan in a finite length duct

Kirby, R

Duan, W

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Publication Type:: Conference Proceeding
Citation:: INTER-NOISE 2017 - 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, 2017, 2017-January
Issue Date:: 2017-01-01

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Field	Value	Language
dc.contributor.author	Kirby, R https://orcid.org/0000-0002-3520-1377	en_US
dc.contributor.author	Duan, W	en_US
dc.date.issued	2017-01-01	en_US
dc.identifier.citation	INTER-NOISE 2017 - 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet, 2017, 2017-January	en_US
dc.identifier.uri	http://hdl.handle.net/10453/132291
dc.description.abstract	© 2017 Institute of Noise Control Engineering. All rights reserved. It is common for axial fans to be located in ducts of finite length and understanding the way in which sound radiates from this type of system is important in controlling noise emissions. However, this type of problem presents a significant computational challenge, especially if one is interested in understanding behaviour at higher frequencies where multiple modes propagate in the duct. This article presents a numerical approach for tackling this problem that is suitable for calculating the radiated sound field from a finite length duct using a series of point dipole sources to represent an axial fan located inside the duct. It is demonstrated that through the use of an efficient numerical approach it is possible to obtain predictions at frequencies that are high enough to reveal well know characteristics of finite length duct radiation, such as organ pipe modes.	en_US
dc.relation.ispartof	INTER-NOISE 2017 - 46th International Congress and Exposition on Noise Control Engineering: Taming Noise and Moving Quiet	en_US
dc.title	Modelling sound radiation from an axial fan in a finite length duct	en_US
dc.type	Conference Proceeding
utslib.citation.volume	2017-January	en_US
utslib.for	0913 Mechanical Engineering	en_US
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
pubs.volume	2017-January	en_US

Abstract:

© 2017 Institute of Noise Control Engineering. All rights reserved. It is common for axial fans to be located in ducts of finite length and understanding the way in which sound radiates from this type of system is important in controlling noise emissions. However, this type of problem presents a significant computational challenge, especially if one is interested in understanding behaviour at higher frequencies where multiple modes propagate in the duct. This article presents a numerical approach for tackling this problem that is suitable for calculating the radiated sound field from a finite length duct using a series of point dipole sources to represent an axial fan located inside the duct. It is demonstrated that through the use of an efficient numerical approach it is possible to obtain predictions at frequencies that are high enough to reveal well know characteristics of finite length duct radiation, such as organ pipe modes.

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http://hdl.handle.net/10453/132291