Investigation on the Acoustic Performance of Multiple Helmholtz Resonator Configurations

IF 1.7 4区物理与天体物理

Acoustics Australia Pub Date : 2021-04-13 DOI:10.1007/s40857-021-00231-8

K. Mahesh, R. S. Mini

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引用次数: 9

Abstract

Helmholtz resonator is considered and widely accepted as a basic acoustic model in engineering applications and research. In this paper, the normal incidence sound absorption characteristics of series and parallel configurations of Helmholtz resonators is studied analytically, numerically and experimentally. The proposed analytical model for series configuration of HRs comprises of Johnson–Champoux–Allard model and transfer matrix method while parallel configuration of HRs is described using parallel transfer matrix method. The results from proposed analytical models fit well with the finite element method (FEM) results obtained from COMSOL multiphysics. Incorporation of parallel configuration and proper tuning of geometric parameters helps to overcome the trade-off between broad band sound absorption and minimum space utilization. Also, the experimental observations of one of the parallel configuration substantiates the FEM results. Moreover, the FEM models are more accountable for the variation in neck position and also provide better visualization of acoustic absorption with frequency.

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几种亥姆霍兹谐振腔结构的声学性能研究

亥姆霍兹谐振器被认为是工程应用和研究中的一种基本声学模型，并被广泛接受。本文对串联和并联亥姆霍兹谐振器的法向入射吸声特性进行了分析、数值和实验研究。所提出的串联配置人力资源的分析模型包括Johnson–Champoux–Allard模型和传递矩阵方法，而并联配置人力资源则使用并行传递矩阵方法进行描述。所提出的分析模型的结果与COMSOL multiphysics的有限元法（FEM）结果非常吻合。并联配置的结合和几何参数的适当调整有助于克服宽带吸声和最小空间利用之间的权衡。此外，对其中一个平行配置的实验观察证实了有限元结果。此外，FEM模型更能解释颈部位置的变化，也能更好地显示吸声随频率的变化。

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来源期刊

Acoustics Australia ACOUSTICS-

自引率

5.90%

发文量

期刊介绍： Acoustics Australia, the journal of the Australian Acoustical Society, has been publishing high quality research and technical papers in all areas of acoustics since commencement in 1972. The target audience for the journal includes both researchers and practitioners. It aims to publish papers and technical notes that are relevant to current acoustics and of interest to members of the Society. These include but are not limited to: Architectural and Building Acoustics, Environmental Noise, Underwater Acoustics, Engineering Noise and Vibration Control, Occupational Noise Management, Hearing, Musical Acoustics.