Simultaneous 2-l OH thermometry and PIV of unsteady methane-air kernel-vortex interactions

S. J. Danby, W. L. Roberts

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


Methane kernel-vortex interactions have been studied using partial image velocimetry (PIV) and 2-l OH thermometry to determine the aerodynamic conditions necessary to produce viable combustion. Three vortex rotational velocities (strengths) have been categorized to explore a range of fluidic motion from completely laminar to transitional. Derived from the 2-D PIV velocity profiles, the strain rate along the edge of the flame-vortex interface has been determined for each of the three vortex strengths. While these results are preliminary, there is a significant increase in the maximum strain rate each kernel undergoes as the strength of the vortex increases. With an increase in vortex rotational velocity of 250% (weak to medium strengths) there is a 60% increase in maximum strain rate, while a 400% increase in vortex rotational velocity (weak to strong) shows a 120% increase in maximum strain rate over the times observed. Thermometry results show an increase in maximum average kernel temperature across the time of interest of 3%, 14% and 19% for the weak vortex, the medium vortex and the strong vortex respectively when compared to the undisturbed kernel.
Original languageEnglish (US)
Title of host publicationFall Technical Meeting of the Eastern States Section of the Combustion Institute 2007 "Chemical and Physical Processes in Combustion"
PublisherCombustion Institute
Number of pages7
ISBN (Print)9781604239454
StatePublished - Jan 1 2007
Externally publishedYes

Bibliographical note

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


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