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dc.contributor.authorGupta, Aen
dc.contributor.authorQadri, Ubaiden
dc.contributor.authorKoutita, Ken
dc.contributor.authorZadrazil, Ien
dc.contributor.authorHussain, Ten
dc.contributor.authorBalachandran, Ren
dc.contributor.authorMarkides, CNen
dc.date.accessioned2020-03-26T00:30:06Z
dc.date.available2020-03-26T00:30:06Z
dc.date.issued2020-08-01en
dc.identifier.issn0894-1777
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/303769
dc.description.abstract© 2020 Elsevier Inc. The dynamic behaviour of periodic laminar premixed acetylene-air flames in a micro-channelled combustor consisting of an array of five planar rectangular channels was found to be influenced by the equivalence ratio and flow-rate of the continuously and steadily injected premixed fuel charge. Three distinct flame stages were observed — planar, chaotic and trident, which were strongly correlated to the flow dynamics. The effect of the flow on the flame behaviour was investigated by characterizing the cold flow in a scaled-up model channel with the same aspect ratio as the combustion micro-channel. Direct flow visualization using flow tracers and quantitative velocity-field data from PIV measurements showed both an increase in the bottom recirculation zone reattachment length (along the floor of the channel) and a decrease in the lateral recirculation zone reattachment length (along the sides of the channel) with increasing flow Reynolds number. Comparison of the flow and flame transition locations downstream of the injection point suggested that the location of trident flame onset coincides with the flow bottom recirculation zone reattachment length. The planar-chaotic flame transition location was observed to be influenced by the homogeneity of the mixture downstream of the injection plane.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleExperimental investigation of the flow in a micro-channelled combustor and its relation to flame behaviouren
dc.typeArticle
prism.publicationDate2020en
prism.publicationNameExperimental Thermal and Fluid Scienceen
prism.volume116en
dc.identifier.doi10.17863/CAM.50849
dcterms.dateAccepted2020-03-05en
rioxxterms.versionofrecord10.1016/j.expthermflusci.2020.110105en
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2020-08-01en
dc.contributor.orcidQadri, Ubaid [0000-0003-1360-6223]
dc.identifier.eissn1879-2286
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idLeverhulme Trust (17.08(n))
cam.orpheus.successTue Mar 31 10:35:01 BST 2020 - Embargo updated*
rioxxterms.freetoread.startdate2021-03-31


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