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dc.contributor.authorDoan, Nguyen Anh Khoaen
dc.contributor.authorSwaminathan, Swamien
dc.contributor.authorChakraborty, Nen
dc.date.accessioned2018-05-21T09:00:31Z
dc.date.available2018-05-21T09:00:31Z
dc.date.issued2017-01-01en
dc.identifier.issn1540-7489
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/275977
dc.description.abstractMultiscale analysis of turbulence-flame interaction is performed using direct numerical simulation (DNS) data of premixed flames. Bandpass filtering method is used to educe turbulent eddies of various sizes and their vorticity and strain rate fields. The vortical structures at a scale of L ω are stretched strongly by the most extensional principal strain rate of eddies of scale 4L ω , which is similar to the behaviour in non-reacting turbulence. Hence, combustion does not influence the physics of vortex stretching mechanism. The fractional contribution from eddies of size L s to the total tangential strain rate is investigated. The results highlight that eddies larger than two times the laminar flame thermal thickness contributes predominantly to flame straining and eddies smaller than 2δ th contributes less than 10% to the total tangential strain rate for turbulence intensities, from u′/s L = 1.41 to u′/s L = 11.25, investigated here. The cutoff scale identified through this analysis is larger than the previous propositions and the implication of this finding to subgrid scale premixed combustion modelling is discussed.
dc.description.sponsorshipN.A.K.D. acknowledges the financial support of the Qualcomm European Research Studentship Fund in Technology. N. C. acknowledges the financial support of EPSRC.
dc.publisherElsevier
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectdirect numerical simulation (DNS)en
dc.subjectturbulent premixed flameen
dc.subjectflame–turbulence interactionen
dc.subjectmultiscale decompositionen
dc.subjectflame tangential strain rateen
dc.titleMultiscale analysis of turbulence-flame interaction in premixed flamesen
dc.typeArticle
prism.endingPage1935
prism.issueIdentifier2en
prism.publicationDate2017en
prism.publicationNameProceedings of the Combustion Instituteen
prism.startingPage1929
prism.volume36en
dc.identifier.doi10.17863/CAM.23257
dcterms.dateAccepted2016-07-26en
rioxxterms.versionofrecord10.1016/j.proci.2016.07.111en
rioxxterms.versionVoR*
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/en
rioxxterms.licenseref.startdate2017-01-01en
dc.contributor.orcidDoan, Nguyen Anh Khoa [0000-0002-9890-3173]
dc.contributor.orcidSwaminathan, Swami [0000-0003-3338-0698]
dc.identifier.eissn1873-2704
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/I027556/1)
pubs.funder-project-idEPSRC (EP/K025791/1)
pubs.funder-project-idEPSRC (1567652)
cam.issuedOnline2016-09-28en


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International