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2018 Volume 27 Issue 6
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Dian-Long Yu, Hui-Jie Shen, Jiang-Wei Liu, Jian-Fei Yin, Zhen-Fang Zhang, Ji-Hong Wen. 2018: Propagation of acoustic waves in a fluid-filled pipe with periodic elastic Helmholtz resonators, Chinese Physics B, 27(6): 283-289. doi: 10.1088/1674-1056/27/6/064301
Citation: Dian-Long Yu, Hui-Jie Shen, Jiang-Wei Liu, Jian-Fei Yin, Zhen-Fang Zhang, Ji-Hong Wen. 2018: Propagation of acoustic waves in a fluid-filled pipe with periodic elastic Helmholtz resonators, Chinese Physics B, 27(6): 283-289. doi: 10.1088/1674-1056/27/6/064301
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Propagation of acoustic waves in a fluid-filled pipe with periodic elastic Helmholtz resonators

  • Laboratory of Science and Technology on Integrated Logistics Support, National University of Defense Technology, Changsha 410073, China

  • College of Power Engineering, Naval University of Engineering, Wuhan 430033, China

  • Available Online: 01/01/2018
  • Fund Project: the National Natural Science Foundation of China (Grant .11372346,51405502,and 51705529)
  • Helmholtz resonators are widely used to reduce noise in a fluid-filled pipe system.It is a challenge to obtain lowfrequency and broadband attenuation with a small sized cavity.In this paper,the propagation of acoustic waves in a fluid-filled pipe system with periodic elastic Helmholtz resonators is studied theoretically.The resonance frequency and sound transmission loss of one unit are analyzed to validate the correctness of simplified acoustic impedance.The band structure of infinite periodic cells and sound transmission loss of finite periodic cells are calculated by the transfer matrix method and finite element software.The effects of several parameters on band gap and sound transmission loss are probed.Further,the negative bulk modulus of periodic cells with elastic Helmholtz resonators is analyzed.Numerical results show that the acoustic propagation properties in the periodic pipe,such as low frequency,broadband sound transmission,can be improved.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Propagation of acoustic waves in a fluid-filled pipe with periodic elastic Helmholtz resonators

  • Available Online: 01/01/2018

Abstract: Helmholtz resonators are widely used to reduce noise in a fluid-filled pipe system.It is a challenge to obtain lowfrequency and broadband attenuation with a small sized cavity.In this paper,the propagation of acoustic waves in a fluid-filled pipe system with periodic elastic Helmholtz resonators is studied theoretically.The resonance frequency and sound transmission loss of one unit are analyzed to validate the correctness of simplified acoustic impedance.The band structure of infinite periodic cells and sound transmission loss of finite periodic cells are calculated by the transfer matrix method and finite element software.The effects of several parameters on band gap and sound transmission loss are probed.Further,the negative bulk modulus of periodic cells with elastic Helmholtz resonators is analyzed.Numerical results show that the acoustic propagation properties in the periodic pipe,such as low frequency,broadband sound transmission,can be improved.

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