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

Conference paper

Aygun, H. and Rubini, P (2014). Behaviour of acoustic waves in a duct with Helmholtz resonator in presence of a temperature gradient. Institute of Acoustics 40th Anniversary Conference. NEC, Birmingham, UK 15 - 16 Oct 2014 http://toc.proceedings.com/24268webtoc.pdf Proceedings of the Institute of Acoustics Volume 36 Pt.3.
AuthorsAygun, H. and Rubini, P
TypeConference paper
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.

KeywordsHelmholtz resonator, duct, acoustic waves, temperature gradient
Year2014
JournalINSTITUTE OF ACOUSTICS. ANNIVERSARY CONFERENCE. 40TH 2014.
PublisherProceedings of the Institute of Acoustics Volume 36 Pt.3
Journal citation645 (1, pp. 415-423
Web address (URL)http://www.proceedings.com/24268.html
Accepted author manuscript
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Open
Publication dates
Print15 Oct 2014
Publication process dates
Deposited05 Dec 2017
Accepted21 Jul 2014
Place of publicationhttp://toc.proceedings.com/24268webtoc.pdf
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