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dc.contributor.authorBoyette, Wesley
dc.contributor.authorBennett, Anthony
dc.contributor.authorCenker, Emre
dc.contributor.authorGuiberti, Thibault
dc.contributor.authorRoberts, William L.
dc.date.accessioned2021-02-15T13:04:09Z
dc.date.available2021-02-15T13:04:09Z
dc.date.issued2021-01-20
dc.date.submitted2020-10-28
dc.identifier.citationBoyette, W. R., Bennett, A. M., Cenker, E., Guiberti, T. F., & Roberts, W. L. (2021). Effects of pressure on soot production in piloted turbulent non-premixed jet flames. Combustion and Flame, 227, 271–282. doi:10.1016/j.combustflame.2021.01.013
dc.identifier.issn0010-2180
dc.identifier.doi10.1016/j.combustflame.2021.01.013
dc.identifier.urihttp://hdl.handle.net/10754/667450
dc.description.abstractLaser-induced incandescence (LII) was used to quantify the soot volume fraction in five piloted turbulent non-premixed C2H4-N2 jet flames at elevated pressures. In one series of flames, the bulk jet velocity was held constant as the pressure was increased from 1 bar (Re = 10,000) to 3 bar (Re = 30,000), and then 5 bar (Re = 50,000). In the other series, a Reynolds number of 10,000 was held constant at 1 bar, 3 bar, and 5 bar. LII measurements were calibrated with laminar diffusion flames at each pressure using 2D diffuse line-of-sight attenuation. Mean and RMS soot volume fractions along the flame centerline exhibit Gaussian profiles for all of the flames. The magnitude of soot volume fraction and the spatial soot distribution are enhanced by increases in pressure. In both series of flames, the peak mean soot volume fraction scales with the pressure as p2.2. In the constant velocity series, the scaling drops to p1.5 if the volume-integrated mean soot volume fraction on a per fuel mass basis is considered instead. At 3 bar, a threefold increase in Re leads to a decrease in the mean soot volume fraction despite the decrease in soot intermittency. At 5 bar, a fivefold increase in Re results in soot intermittency near zero at the flame's center and a slight increase in the mean soot volume fraction.
dc.description.sponsorshipThe research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST).
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0010218021000213
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Combustion and Flame. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Combustion and Flame, [227, , (2021-01-20)] DOI: 10.1016/j.combustflame.2021.01.013 . © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleEffects of pressure on soot production in piloted turbulent non-premixed jet flames
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentKing Abdullah University of Science and Technology (KAUST), CCRC, Thuwal 23955-6900, Saudi Arabia
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalCombustion and Flame
dc.rights.embargodate2023-01-20
dc.eprint.versionPost-print
dc.identifier.volume227
dc.identifier.pages271-282
kaust.personBoyette, Wesley
kaust.personBennett, Anthony M.
kaust.personCenker, Emre
kaust.personGuiberti, Thibault
kaust.personRoberts, William L.
dc.date.accepted2021-01-04
dc.identifier.eid2-s2.0-85100123572
refterms.dateFOA2021-02-15T13:25:56Z


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