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dc.contributor.authorAhmed, Ien
dc.contributor.authorSwaminathan, Swamien
dc.date.accessioned2015-02-12T12:19:11Z
dc.date.available2015-02-12T12:19:11Z
dc.date.issued2013-09-16en
dc.identifier.citationCombustion Science and Technology Volume 185, Issue 10, 2013. DOI: 10.1080/00102202.2013.808629en
dc.identifier.issn0010-2202
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/246747
dc.description.abstractStatistically spherical expanding turbulent premixed flames are computed using unsteady Reynolds-Averaged Navier-Stokes (URANS) approach. Mean reaction rate is closed using strained and unstrained flamelet models and an algebraic model. The flamelets are parametrised using the scalar dissipation rate in the strained flamelet model. It is shown that this model is able to capture the measured growth rate of methane-air turbulent flame ball, which is free of thermo-diffusive instability. The spherical flames are observed to accelerate continuously. The flame brush thickness grows in time and the role of turbulent diffusion on this growth seems secondary compared to the convection due to the fluid velocity induced by the chemical reaction. The spherical flames have larger turbulent flame speed, the leading edge displacement speed st, compared to the planar flames for a given turbulence and thermo-chemical condition. The computational results suggest st/s0 L " Rent with 0.57 # n # 0.58, where Ret is the turbulence Reynolds number and s0 L is the unstrained planar laminar flame speed, for both spherical and planar flames.
dc.languageEnglishen
dc.language.isoenen
dc.publisherTaylor & Francis
dc.subjectTurbulent Premixed Flamesen
dc.subjectSpherical Flamesen
dc.subjectScalar Dissipation Rateen
dc.subjectTurbulent Flame Speeden
dc.titleSimulation of spherically expanding turbulent premixed flamesen
dc.typeConference Object
dc.description.versionThis is an Accepted Manuscript of an article published by Taylor & Francis inCombustion Science and Technology on 16 September 2013, available online: http://wwww.tandfonline.com/10.1080/00102202.2013.808629.en
prism.endingPage1540
prism.publicationDate2013en
prism.publicationNameCombustion Science and Technologyen
prism.startingPage1509
prism.volume185en
rioxxterms.versionofrecord10.1080/00102202.2013.808629en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2013-09-16en
dc.contributor.orcidSwaminathan, Swami [0000-0003-3338-0698]
dc.identifier.eissn1563-521X
rioxxterms.typeConference Paper/Proceeding/Abstracten


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