Effect of vortex interactions on the laminar flame speed of methane and propane flame kernels

S. J. Danby, S. K. Marley, William Roberts

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

Abstract

Methane and propane kernel-vortex interactions have been investigated using high-speed chemiluminescence imaging coupled with simultaneous global pressure measurements. Highly repeatable vortex generation and reactant equivalence ratio have allowed a direct comparison between a variety of vortex strengths and reactant mixtures. Characterized as "weak", "medium" and "strong", the vortices are timed to interact with a variety of sizes of kernels (based on time since ignition). High-speed chemiluminescence images have shown a general geometric increase in kernel area and therefore reactant consumption rate. Simultaneous pressure measurements show a global increase in rate of pressure rise when burning is augmented with a vortex. Also, the effect of vortex strength on global kernel geometry can, in some cases, be directly observed through the pressure measurements. Simultaneous effective radius and pressure measurements allow the determination of local, instantaneous laminar flame speed, which gives particular insight into the effects of vortex augmentation.

Original languageEnglish (US)
Title of host publication5th US Combustion Meeting 2007
PublisherCombustion Institute
Pages880-893
Number of pages14
ISBN (Electronic)9781604238112
StatePublished - Jan 1 2007
Event5th US Combustion Meeting 2007 - San Diego, United States
Duration: Mar 25 2007Mar 28 2007

Publication series

Name5th US Combustion Meeting 2007
Volume2

Other

Other5th US Combustion Meeting 2007
CountryUnited States
CitySan Diego
Period03/25/0703/28/07

ASJC Scopus subject areas

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

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