Behaviour of acoustic waves in a duct with Helmholtz resonator in presence of a temperature gradient

Haydar Aygün, Philip Rubini

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Understanding the behaviour of one-dimensional acoustical wave propagation in ducts is very important for controlling combustion instabilities in propulsion, household burners, gas turbine combustors, and designing engineering mufflers. This paper is concerned with ducts in which temperature gradient exist. Computational Fluid Dynamics (CFD) simulation of the acoustic wave propagations through a duct with Helmholtz resonators in the presence of a mean temperature gradient without mean air flow has been investigated. Acoustic pressure and axial velocity amplitudes have been calculated as a function of time. Time and axial distance dependent acoustic pressure and velocity are visualised as 3D surface plots.
Original languageEnglish
Title of host publication40th Anniversary Conference of the Institute of Acoustics 2014
PublisherInstitute of Acoustics
Pages407-414
Number of pages9
ISBN (Electronic)9781634395229
Publication statusPublished - 15 Oct 2014
Externally publishedYes
Event40th Anniversary Conference of the Institute of Acoustics 2014 - Birmingham, United Kingdom
Duration: 15 Oct 201416 Oct 2014

Publication series

NameProceedings of the Institute of Acoustics
Volume36
ISSN (Print)1478-6095

Conference

Conference40th Anniversary Conference of the Institute of Acoustics 2014
Country/TerritoryUnited Kingdom
CityBirmingham
Period15/10/1416/10/14

Keywords

  • Helmholtz resonator, duct, acoustic waves, temperature gradient

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