Convective wave motion during combustion instability in a low-swirl burner flame

J. A. Ranalli, D. Ferguson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Flame-acoustic interactions are known to lead to localized perturbations in the flame surface. These perturbations are observed to travel as a wave along the flame surface, resulting in a spatially distributed disturbance in the flame heat release rate. The specific characteristics of this interaction are of utmost importance to the physics of thermoacoustic instabilities. The speed of wave propagation is a useful quantity for application to flame dynamic modeling strategies, such as flame sheet models. Additionally, the time delay associated with the motion of the disturbance through the flame is crucial to predicting the frequencies at which instabilities may occur. Measurements of this wave motion were made in a low-swirl burner configuration (that was capable of exhibiting self-excited instabilities) through the use of flame radical chemiluminescence imaging.

Original languageEnglish (US)
Title of host publicationWestern States Section of the Combustion Institute Spring Technical Meeting 2010
PublisherWestern States Section/Combustion Institute
Pages11-19
Number of pages9
ISBN (Electronic)9781617384196
StatePublished - Jan 1 2010
EventWestern States Section of the Combustion Institute Spring Technical Meeting 2010 - Boulder, United States
Duration: Mar 22 2010Mar 23 2010

Publication series

NameWestern States Section of the Combustion Institute Spring Technical Meeting 2010

Other

OtherWestern States Section of the Combustion Institute Spring Technical Meeting 2010
CountryUnited States
CityBoulder
Period3/22/103/23/10

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

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