Show simple item record

dc.contributor.authorBisetti, Fabrizio
dc.contributor.authorSarathy, Mani
dc.contributor.authorToma, Milan
dc.contributor.authorChung, Suk Ho
dc.date.accessioned2015-08-12T09:30:55Z
dc.date.available2015-08-12T09:30:55Z
dc.date.issued2015
dc.identifier.issn15407489
dc.identifier.doi10.1016/j.proci.2014.06.077
dc.identifier.urihttp://hdl.handle.net/10754/566169
dc.description.abstractA set of tribrachial flames of n-heptane/air is simulated with finite rate chemistry and detailed transport in a realistic laminar jet configuration for which experimental data are available. The flames differ by the temperature of the unburnt mixture and stabilization height, which controls the mixture fraction gradient ahead of the flame front. The simulations reproduce the lift-off heights in the experiments, showing that the flame stabilizes further downstream as the unburnt temperature decreases. For the lowest unburnt temperature, resulting in a weak mixture fraction gradient at the tribrachial point, positive stretch along the rich premixed wing leads to an increase in the rate of chemical reaction in the whole flame. The tribrachial flame burning velocity exceeds that in the unstretched, one-dimensional flame. For the highest temperature, the flame stabilizes closest to the nozzle. Large flame tilt, large mixture fraction gradient, and small radius of curvature lead to a reduction in the heat release rate and the flame propagates slower than its one-dimensional counterpart. The observed behavior is explained with a detailed analysis of the flame geometry, differential diffusion effects, flame stretch, and transport of heat and mass from the burnt gases to the flame front. © 2014 The Combustion Institute.
dc.description.sponsorshipThe research reported in this publication was supported by Saudi Aramco and by King Abdullah University of Science and Technology (KAUST).
dc.publisherElsevier BV
dc.subjectDifferential diffusion
dc.subjectFlame stretch
dc.subjectLifted flame
dc.subjectn-Heptane
dc.subjectTribrachial flame
dc.titleStabilization and structure of n-heptane tribrachial flames in axisymmetric laminar jets
dc.typeArticle
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentCombustion and Laser Diagnostics Laboratory
dc.contributor.departmentCombustion and Pyrolysis Chemistry (CPC) Group
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentReactive Flow Modeling Laboratory (RFML)
dc.identifier.journalProceedings of the Combustion Institute
kaust.personBisetti, Fabrizio
kaust.personSarathy, Mani
kaust.personToma, Milan
kaust.personChung, Suk Ho


This item appears in the following Collection(s)

Show simple item record