Calculation of duct flow noise using CE/SE method

Horus Y.H. Chan, Garret C.Y. Lam, Chi Kin Randolph Leung

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

Abstract

Noise generated in flow duct propagates extensively through the connected ductwork. Its propagation through the outlets would contribute to indoor acoustic discomfort and results in environmental problem. Silencers with acoustic lining are commonly adopted for noise mitigation in flow duct. Researchers have been devoting many numerical efforts in assessing the performance of a liner design. In general, numerical studies are performed by either time domain or frequency domain approach. This paper reports a development of calculation method solving Acoustic Perturbation Equations and Time-Domain Impedance Boundary on the Conservation Element and Solution Element (CE/SE) framework to calculate duct noise problem in time domain. In this paper, three benchmark cases are presented to verify the capability of the proposed method on calculating the flow induced acoustic generation, propagation, and the acoustic behavior at the impedance boundaries in the presence and absence of flow.
Original languageEnglish
Title of host publicationINTERNOISE 2014 - 43rd International Congress on Noise Control Engineering
Subtitle of host publicationImproving the World Through Noise Control
PublisherAustralian Acoustical Society
ISBN (Electronic)9780909882037
Publication statusPublished - 1 Jan 2014
Event43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014 - Melbourne, Australia
Duration: 16 Nov 201419 Nov 2014

Conference

Conference43rd International Congress on Noise Control Engineering: Improving the World Through Noise Control, INTERNOISE 2014
Country/TerritoryAustralia
CityMelbourne
Period16/11/1419/11/14

Keywords

  • CE/SE
  • Duct noise
  • Liner

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this