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

S. J. Danby, S. K. Marley, W. L. Roberts

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


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
Number of pages14
ISBN (Print)9781604238112
StatePublished - Jan 1 2007
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-20


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