The effect of various flame parameters on sound generation by premixed laminar flame annihilation

A. Haghiri, M. Talei, S. Karami, S. Wiseman, M. J. Brear, E. R. Hawkes

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Abstract

This paper presents direct numerical simulations (DNS) of sound generation by a two-dimensional laminar, premixed, flame excited at the inflow boundary. This low-Mach and unity Lewis number study investigates the effect of various flame parameters such as the Zel’dovich number, the flame speed, and the temperature ratio, on the sound produced by two annihilation events; namely, ‘flame pinch-off’ and ‘flame island burn-out’ which are observed as strong, monopolar sound sources. The impacts of these flame parameters are found to be quite significant not only on the magnitude of the noise emission, but also on its phase.
Original languageEnglish
Title of host publicationAustralian Combustion Symposium 2013 Proceedings
EditorsMingming Zhu, Yu Ma, Yun Yu, Hari Vuthaluru, Zhezi Zhang, Dongke Zhang
Place of PublicationNSW Australia
PublisherMacquarie University
Pages364-367
Number of pages4
Publication statusPublished - Nov 2013
Externally publishedYes
EventAustralian Combustion Symposium 2013 - Perth, Australia
Duration: 6 Nov 20138 Nov 2013

Publication series

NameAustralian Combustion Symposium
PublisherMacquarie University
ISSN (Print)1839-8170
ISSN (Electronic)1839-8162

Conference

ConferenceAustralian Combustion Symposium 2013
CountryAustralia
CityPerth
Period6/11/138/11/13

Keywords

  • Direct numerical simulation
  • Combustion noise
  • Annihilation event

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