Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/6621
Title: On sound transmission loss across a Helmholtz resonator in a low Mach number flow duct
Authors: Tang, SK 
Keywords: Acoustic variables control
Aerodynamics
Architectural acoustics
Ducts
Mach number
Wave transmission
Issue Date: Jun-2010
Publisher: Acoustical Society of America
Source: Journal of the Acoustical Society of America, June 2010, v. 127, no. 6, p. 3519-3525 How to cite?
Journal: Journal of the Acoustical Society of America 
Abstract: A simplified physical model, which described the generation of sound by a Helmholtz resonator upon flow excitation at its neck, was developed in the present investigation to study the drop in sound power transmission loss across such a resonator mounted on the wall of a duct conveying a low Mach number mean flow. Experiments were derived to validate the model. Mitigation methods derived according to the model were also tested experimentally. Results showed that the simplified model gave predictions which agreed with experimental observations. The proposed mitigation methods were also proved to be effective for building services application. It was also found that the sound intensity generated by the flow excited resonator scaled with approximately the ninth power of the flowvelocity inside the duct.
URI: http://hdl.handle.net/10397/6621
ISSN: 0001-4966
DOI: 10.1121/1.3409481
Rights: Copyright 2010 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.
The following article appeared in Tang, S. K. (2010). On sound transmission loss across a helmholtz resonator in a low mach number flow duct. Journal of the Acoustical Society of America, 127(6), 3519-3525 and may be found at http://scitation.aip.org/content/asa/journal/jasa/127/6/10.1121/1.3409481.
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