Calculated concentration distributions and time histories of key species in an acoustically forced laminar flame

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dc.contributor.authorFoo, K.K.
dc.contributor.authorEvans, M.J.
dc.contributor.authorSun, Z.
dc.contributor.authorMedwell, P.R.
dc.contributor.authorAlwahabi, Z.T.
dc.contributor.authorNathan, G.J.
dc.contributor.authorDally, B.B.
dc.date.issued2019
dc.description.abstractA numerical study of the fluid-chemical interactions in a steady and time-varying laminar non-premixed jet flame was conducted to advance understanding of the complex interplay between the flame chemistry, fluid dynamics and soot evolution. Modelling of the steady flame is performed with two alternative reduced mechanisms and compared with the significant body of experimental data that are now available to provide confidence in the calculated values of mixture fraction, which was not previously available. A Method-of-Moments soot model with a 47-species mechanism provides much better agreement with the measured soot volume fraction than does a 32-species mechanism, but both mechanisms predict both the temporal and spatial profiles of mixture fraction to agree within 6%. Nevertheless, neither scheme predicts a reduction in temperature that coincides approximately with the location immediately upstream from the measured soot field. The calculations of the unsteady flame also reveal new insights about the cause of the pinch-off point and the neck zone, together with the role of buoyancy at the flame tip.
dc.description.statementofresponsibilityKae Ken Foo, Michael J. Evans, Zhiwei Sun, Paul R. Medwell, Zeyad T. Alwahabi, Graham J. Nathan, Bassam B.Dally
dc.identifier.citationCombustion and Flame, 2019; 204:189-203
dc.identifier.doi10.1016/j.combustflame.2019.03.019
dc.identifier.issn0010-2180
dc.identifier.issn1556-2921
dc.identifier.orcidFoo, K.K. [0000-0002-6015-0911]
dc.identifier.orcidEvans, M.J. [0000-0003-1004-5168]
dc.identifier.orcidSun, Z. [0000-0001-7899-9676]
dc.identifier.orcidMedwell, P.R. [0000-0002-2216-3033]
dc.identifier.orcidAlwahabi, Z.T. [0000-0003-4831-7798]
dc.identifier.orcidNathan, G.J. [0000-0002-6922-848X]
dc.identifier.urihttp://hdl.handle.net/2440/120511
dc.language.isoen
dc.publisherElsevier
dc.relation.granthttp://purl.org/au-research/grants/arc/DP130100198
dc.rights© 2019 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.combustflame.2019.03.019
dc.subjectEthylene; numerical model; residence time; time-varying laminar flame; zero-gravity
dc.titleCalculated concentration distributions and time histories of key species in an acoustically forced laminar flame
dc.typeJournal article
pubs.publication-statusPublished

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