Investigation on multiple-frequency resonant characteristics of a Helmholtz resonator with an extended neck
Source abstract
Abstract
Helmholtz resonator (HR) is widely used in various fields, but the classic HR usually should satisfy the acoustically compact condition, which limits the application range of the classic HR. This paper investigates analytically and numerically the acoustic performance of a HR in which the length of the neck is not limited under the acoustically compact conditions. An analytical model is developed for accurately and quickly predicting resonant frequencies and transmission loss of the Helmholtz resonator with an extended neck (HREN), and numerical simulations have been performed to validate the developed analytical model. Both the analytical and numerical studies reveal that the HREN has multiple resonant frequencies, and a method is developed for approximate and fast calculation of the multiple resonant frequencies.
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Research context
OpenAlex topics: Acoustic Wave Phenomena Research · Aerodynamics and Acoustics in Jet Flows · Structural Health Monitoring Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Aerospace Engineering, Huazhong University of Science and Technology 1 , 430074 Wuhan, People’s Republic of China
School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology 2 , 430063 Wuhan, People’s Republic of China
Funding
National Natural Science Foundation of China
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