Effect of Mean Flow on Acoustic Wave Propagation in a Duct with a Periodic Array of Helmholtz Resonators

刘江伟; 郁殿龙; 杨海滨; 沈惠杰; 温激鸿

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Effect of Mean Flow on Acoustic Wave Propagation in a Duct with a Periodic Array of Helmholtz Resonators

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Sound propagation properties of a duct system with Helmholtz resonators(HRs)are affected by mean flow.Previous studies have tended to focus on the effects of mean flows on acoustic response of a duct system with a finite number of HRs.Employing an empirical impedance model,we present a modified transfer matrix method for studying the effect of mean flow on the complex band structure of an air duct system with an infinite periodic array of HRs.The efficiency of the modified transfer matrix is demonstrated by comparison between an example of transmission response calculation for a finite single HR loaded duct and the finite element simulation result calculated using the COMSOL software.Numerical results are presented to analyze the effect of mean flow on the band structure and transmission loss of the sound wave in the duct system.It is hoped that this study will provide theoretical guidance for acoustic wave propagation of HR silencer in the presence of mean flow.

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《中国物理快报：英文版》 |2020年第3期|32-35|共4页
作者
刘江伟; 郁殿龙; 杨海滨; 沈惠杰; 温激鸿;
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作者单位

Laboratory of Science and Technology on Integrated Logistics Support;

College of Intelligence Science and Technology;

National University of Defense Technology;

Changsha 410073;

College of Power Engineering;

Naval University of Engineering;

Wuhan 430033;

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原文格式 PDF
正文语种 chi
中图分类声的传播;
关键词
flow.; Helmholtz; finite;

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2. Attenuation Performance of a Semi-Active Helmholtz Resonator in a Grazing Flow Duct [J] . Xiaofeng Shi ,Cheuk Ming Mak ,Jun Yang . 声学期刊(英文) . 2013,第1期
3. Attenuation Effect of Expansion Configuration and Acoustic Material on Propagation of Blast Waves in a Duct [J] . Motonobu Ishiguro ,Kenji Shinkai ,Ryo Shimamura . 流量控制、测量及可视化（英文） . 2016,第3期
4. Nonlinear Propagation of Positron-Acoustic Periodic Travelling Waves in a Magnetoplasma with Superthermal Electrons and Positrons [J] . E.F.EL-Shamy . 中国物理快报：英文版 . 2017,第6期
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Effect of Mean Flow on Acoustic Wave Propagation in a Duct with a Periodic Array of Helmholtz Resonators

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