Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28688
Title: Helmholtz resonator with a spiral neck
Authors: Shi, X
Mak, CM 
Keywords: Helmholtz resonator
Spiral neck
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Issue Date: 2015
Publisher: Elsevier Ltd
Source: Applied acoustics, 2015, v. 99, p. 68-71 How to cite?
Journal: Applied Acoustics 
Abstract: The Helmholtz resonator (HR) with a spiral neck is studied in this paper both theoretically and numerically. The proposed modified HR uses a spiral duct to lengthen the neck in a small space. The curvature effect of the spiral neck is transformed to an equivalent straight tube and the overall attenuation performance of the HR is then derived. The theoretical results agree well with the simulation predictions, showing that a HR with a spiral neck can achieve high sound reduction within a small space at low frequencies. Furthermore, it also displays several resonance frequencies at higher frequencies.
URI: http://hdl.handle.net/10397/28688
ISSN: 0003-682X
DOI: 10.1016/j.apacoust.2015.05.012
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