Change search
ReferencesLink to record
Permanent link

Direct link
Intrinsic instability of flame-acoustic coupling
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, Marcus Wallenberg Laboratory MWL. Eindhoven University of Technology, Netherlands.ORCID iD: 0000-0002-3609-3005
Show others and affiliations
2014 (English)In: Combustion and Flame, ISSN 0010-2180, E-ISSN 1556-2921, Vol. 161, no 11, 2860-2867 p.Article in journal (Refereed) Published
Abstract [en]

This paper shows that a flame can be an intrinsically unstable acoustic element. The finding is clarified in the framework of an acoustic network model, where the flame is described by an acoustic scattering matrix. The instability of the flame acoustic coupling is shown to become dominating in the limit of no acoustic reflections. This is in contrast to classical standing-wave thermoacoustic modes, which originate from the positive feedback loop between system acoustics and the flame. These findings imply that the effectiveness of passive thermoacoustic damping devices is limited by the intrinsic stability properties of the flame.

Place, publisher, year, edition, pages
2014. Vol. 161, no 11, 2860-2867 p.
Keyword [en]
Thermoacoustics, Intrinsic flame instability, Flame instability, Acoustics, Combustion instabilities
National Category
Fluid Mechanics and Acoustics
URN: urn:nbn:se:kth:diva-156105DOI: 10.1016/j.combustflame.2014.05.009ISI: 000343380000010ScopusID: 2-s2.0-84926277042OAI: diva2:778127

QC 20150109

Available from: 2015-01-09 Created: 2014-11-21 Last updated: 2015-01-09Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Lopez Arteaga, Ines
By organisation
Marcus Wallenberg Laboratory MWL
In the same journal
Combustion and Flame
Fluid Mechanics and Acoustics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 39 hits
ReferencesLink to record
Permanent link

Direct link