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dc.contributor.authorAhmed, Uen
dc.contributor.authorDoan, Nguyen Anh Khoaen
dc.contributor.authorLai, Jen
dc.contributor.authorKlein, Men
dc.contributor.authorChakraborty, Nen
dc.contributor.authorSwaminathan, Swamien
dc.date.accessioned2018-11-23T00:30:19Z
dc.date.available2018-11-23T00:30:19Z
dc.date.issued2018-10-01en
dc.identifier.issn1070-6631
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/285737
dc.description.abstractMultiscale analysis of wall-bounded turbulent premixed flames is performed using three-dimensional direct numerical simulation data of flame-wall interaction (FWI). The chosen configuration repre- sents head-on quenching of a turbulent statistically planar stoichiometric methane-air flame by an isothermal inert wall. Different turbulence intensities and chemical mechanisms have been analyzed. A bandpass filtering technique is utilised to analyze the influence of turbulent eddies of varying size and the statistics of vorticity and strain rate fields associated with them. It is found that the presence of the flame does not alter the mechanism of vortex stretching in turbulent flows when the flame is away from the wall, but in the case of FWI, the mechanism of vortex stretching is altered due to a reduction in the contribution from non-local strain, and the small scales of turbu- lence start to contribute to the flame straining process. The results indicate that small scale eddies do not contribute to the tangential strain rate when the flames are away from the walls, whereas the contribution from the small scales to the tangential strain rate increases when the flame is in the vicinity of the wall. It is also found that the choice of chemical mechanism does not influ- ence the underlying fluid mechanical processes involved in FWI.
dc.publisherAmerican Institute of Physics Publising LLC
dc.titleMultiscale analysis of head-on quenching premixed turbulent flamesen
dc.typeArticle
prism.issueIdentifier10en
prism.publicationDate2018en
prism.publicationNamePhysics of Fluidsen
prism.volume30en
dc.identifier.doi10.17863/CAM.33081
dcterms.dateAccepted2018-09-16en
rioxxterms.versionofrecord10.1063/1.5047061en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2018-10-01en
dc.contributor.orcidDoan, Nguyen Anh Khoa [0000-0002-9890-3173]
dc.contributor.orcidLai, J [0000-0001-9409-5669]
dc.contributor.orcidSwaminathan, Nedunchezhian [0000-0003-3338-0698]
dc.identifier.eissn1089-7666
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (via Newcastle University) (EP/P022286/1)
pubs.funder-project-idEPSRC (EP/K025791/1)
rioxxterms.freetoread.startdate2019-10-01


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