Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/65549
PIRA download icon_1.1View/Download Full Text
Title: Low frequency interactions between coupled narrow sidebranch arrays and the resulted sound transmission losses
Authors: Yu, HM 
Tang, SK 
Issue Date: Feb-2017
Source: Applied acoustics, Feb. 2017, v. 117, pt. A, p. 51-60
Abstract: The low frequency sound interactions between coupled narrow sidebranch arrays installed in an infinitely long rectangular duct are investigated numerically using the finite-element method in the present study. The corresponding transmission losses achieved these coupled sidebranch arrays are also examined. The interactions between the coupled sidebranch arrays result in both dipole-like and quadrupole-like radiations into the main duct. Results show that the coupling of two sidebranch arrays of different sidebranch length series side-by-side on one side of the duct wall can improve the performance in term of spectral uniformity of sound transmission loss compared with the cases where only one array covers the whole spanwise width of the duct. The installation of two coupled arrays on opposite sides of the duct cross-section improves the magnitudes of the sound transmission loss in general. The performance of the coupled array system can be further enhanced by removing the separating wall between sub-arrays of one of the coupled sidebranch arrays. It is also found that reversing the sidebranch arrangement of one of the coupled arrays is detrimental to the low frequency performance of the array system.
Keywords: Low frequency duct noise
Silencing device
Sound transmission loss
Publisher: Pergamon Press
Journal: Applied acoustics 
ISSN: 0003-682X
EISSN: 1872-910X
DOI: 10.1016/j.apacoust.2016.10.020
Rights: © 2016 Elsevier Ltd. All rights reserved.
© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
The following publication Yu, H. M., & Tang, S. K. (2017). Low frequency interactions between coupled narrow sidebranch arrays and the resulted sound transmission losses. Applied Acoustics, 117, 51-60 is available at https://doi.org/10.1016/j.apacoust.2016.10.020
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Tang_Low_Frequency_Interactions.pdfPre-Published version2.91 MBAdobe PDFView/Open
Open Access Information
Status open access
File Version Final Accepted Manuscript
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

129
Last Week
0
Last month
Citations as of Mar 24, 2024

Downloads

36
Citations as of Mar 24, 2024

SCOPUSTM   
Citations

9
Last Week
0
Last month
Citations as of Mar 29, 2024

WEB OF SCIENCETM
Citations

6
Last Week
0
Last month
Citations as of Mar 28, 2024

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.