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dc.contributor.authorKarami, S
dc.contributor.authorTALEI, M
dc.contributor.authorHawkes, ER
dc.contributor.editorYang, Y
dc.contributor.editorSmith, N
dc.date.accessioned2021-01-11T04:11:16Z
dc.date.available2021-01-11T04:11:16Z
dc.date.issued2015
dc.identifier.citationKarami, S., TALEI, M. & Hawkes, E. R. (2015). Local extinction and reignition in a turbulent lifted flame. Yang, Y (Ed.) Smith, N (Ed.) Proceedings of the Australian Combustion Symposium, pp.168-171. The Combustion Institute Australia & New Zealand Section.
dc.identifier.urihttp://hdl.handle.net/11343/258644
dc.description.abstractDirect numerical simulation (DNS) was used to analyse local extinction and reignition in a lifted turbulent flame. The edge flame propagation velocity appears to be dependent on the scalar dissipation rate consistent with previous experimental and numerical studies. This dependency is analysed with a model proposed for laminar triple flames, showing a good agreement for moderate scalar dissipation rates and an under- and over-predictions of the DNS results in very low and high scalar dissipation rates, respectively. These discrepancies are then explained based on the model’s assumptions. The extinction and reignition are also analysed separately where the distinction is made based on the average hole diameter. It is revealed that during the extinction process, the edge flame is primarily a nonpremixed flame and propagation velocity reduces in a non-linear manner as scalar dissipation rate increases. In the reignition process, the flame experiences a wide range of premixed and non-premixed modes and the edge propagation velocity, conditionally averaged on the scalar dissipation rate decreases linearly when the scalar dissipation rate increases.
dc.publisherThe Combustion Institute Australia & New Zealand Section
dc.source2015 Australian Combustion Symposium (ACS)
dc.titleLocal extinction and reignition in a turbulent lifted flame
dc.typeConference Paper
melbourne.affiliation.departmentMechanical Engineering
melbourne.source.titleProceedings of the Australian Combustion Symposium
melbourne.source.pages168-171
melbourne.elementsid1025409
melbourne.contributor.authorTalei, Mohsen
dc.identifier.eissn1839-8162
melbourne.event.locationMelbourne, Australia
melbourne.accessrightsOpen Access


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