Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/74823
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dc.contributorDepartment of Mechanical Engineeringen_US
dc.creatorYu, Den_US
dc.creatorZhang, Pen_US
dc.date.accessioned2018-03-29T09:33:59Z-
dc.date.available2018-03-29T09:33:59Z-
dc.identifier.issn0010-2180en_US
dc.identifier.urihttp://hdl.handle.net/10397/74823-
dc.language.isoenen_US
dc.publisherElsevier Inc.en_US
dc.rights© 2017 The Combustion Institute. Published by Elsevier Inc. All rights reserved.en_US
dc.rights© 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.en_US
dc.rightsThe following publication Yu, D., & Zhang, P. (2018). Circulation-controlled firewhirls with differential diffusion. Combustion and Flame, 189, 288-299 is available at https://doi.org/10.1016/j.combustflame.2017.10.040.en_US
dc.subjectDifferential diffusionen_US
dc.subjectFar-field similarity solutionen_US
dc.subjectFirewhirlen_US
dc.subjectGreen's functionen_US
dc.subjectNon-unity Lewis numberen_US
dc.subjectPerturbation theoryen_US
dc.titleCirculation-controlled firewhirls with differential diffusionen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage288en_US
dc.identifier.epage299en_US
dc.identifier.volume189en_US
dc.identifier.doi10.1016/j.combustflame.2017.10.040en_US
dcterms.abstractA flame-sheet theory for circulation-controlled firewhirls with differential diffusion is presented to investigate the effects of non-unity and unequal Lewis numbers on the flame shape and height of the firewhirls. Variable physical properties and a piecewise generalized power-law vortex model are implemented in the theory. For the fuel and oxidizer Lewis numbers being unequal but close to unity, the perturbation solutions of the Burke–Schumann-like transport equation for the Lewis-number-weighted coupling functions were obtained by using the Green's function method. The derived flame height expression not only confirms the previous discoveries, such as the Peclet number effect found by Chuah et al. (2011), the strong vortex effect by Klimenko and William (2013), and the variable density and mass diffusivity effects by Yu and Zhang (2017), but also demonstrates that the mass-diffusivity-ratio model correction newly proposed by Yu and Zhang (2017) is attributable to the leading-order non-unity Lewis number effect. The validity of the differential diffusion effects on the flame height was extended to arbitrary Lewis numbers and verified by means of the approximate far-field similarity solutions of the mixture fraction.en_US
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationCombustion and flame, Mar. 2018, v. 189, p. 288-299en_US
dcterms.isPartOfCombustion and flameen_US
dcterms.issued2018-03-
dc.identifier.scopus2-s2.0-85034059289-
dc.identifier.rosgroupid2017000988-
dc.description.ros2017-2018 > Academic research: refereed > Publication in refereed journalen_US
dc.description.validate201803 bcmaen_US
dc.description.oaAccepted Manuscripten_US
dc.identifier.FolderNumberME-0679-
dc.description.fundingSourceRGCen_US
dc.description.fundingSourceOthersen_US
dc.description.fundingTextPolyUen_US
dc.description.pubStatusPublisheden_US
dc.identifier.OPUS14480438-
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