Design and analysis of broadband acoustic silencers

Xiang Yu, Li Cheng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Acoustic silencers are widely used in ventilation and exhaust systems such as internal combustion engines, plenum chambers, air-conditioning equipments, power plant ducts and stacks, etc. Conventional silencers are mainly classified into dissipative and reactive type, depending on whether the incoming sound energy is converted into heat by means of absorbing materials or reflected back due to impedance mismatches. In practice, acoustic silencers are preferred with broadband attenuation performance, relatively simple structure, easy maintenance, whilst complying with various engineering constraints. This paper investigates into the feasibility of using a cascade sub-chamber scheme for the better design of acoustic silencers. Through a case study on a reactive silencer design, results show that the proposed design strategy produces a cascade silencer with desired broadband performance. A systematic silencer design methodology is then proposed, which offers a wider scope for various silencer design applications.
Original languageEnglish
Title of host publication2015 International Conference on Noise and Fluctuations, ICNF 2015
PublisherIEEE
ISBN (Electronic)9781467383356
DOIs
Publication statusPublished - 2 Oct 2015
EventInternational Conference on Noise and Fluctuations, ICNF 2015 - Xian, China
Duration: 2 Jun 20156 Jun 2015

Conference

ConferenceInternational Conference on Noise and Fluctuations, ICNF 2015
CountryChina
CityXian
Period2/06/156/06/15

Keywords

  • Acoustic silencer
  • Noise control
  • Optimization
  • Sub-chamber desgin
  • Transmission loss

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

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