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dc.contributor.authorKim, Minkuk
dc.contributor.authorChung, Suk Ho
dc.contributor.authorKim, Hwanho
dc.date.accessioned2015-08-02T09:14:59Z
dc.date.available2015-08-02T09:14:59Z
dc.date.issued2011
dc.identifier.issn15407489
dc.identifier.doi10.1016/j.proci.2010.06.062
dc.identifier.urihttp://hdl.handle.net/10754/561595
dc.description.abstractThe stabilization characteristics of laminar premixed bunsen flames have been investigated experimentally for stoichiometric methane-air mixture by applying AC voltage to the nozzle with the single-electrode configuration. The detachment velocity either at blowoff or partial-detachment has been measured by varying the applied voltage and frequency of AC. The result showed that the detachment velocity increased with the applied AC electric fields, such that the flame could be nozzle-attached even over five times of the blowoff velocity without having electric fields. There existed four distinct regimes depending on applied AC voltage and frequency. In the low voltage regime, the threshold condition of AC electric fields was identified, below which the effect of electric fields on the detachment velocity is minimal. In the moderate voltage regime, the flame base oscillated with the frequency synchronized to AC frequency and the detachment velocity increased linearly with the applied AC voltage and nonlinearly with the frequency. In the high voltage regime, two different sub-regimes depending on AC frequency were observed. For relatively low frequency, the flame base oscillated with the applied AC frequency together with the half frequency and the variation of the detachment velocity was insensitive to the applied voltage. For relatively high frequency, the stabilization of the flame was significantly affected by the generation of streamers and the detachment velocity decreased with the applied voltage. © 2010 Published by Elsevier Inc. on behalf of The Combustion Institute. All rights reserved.
dc.description.sponsorshipThis work was supported by AEA project/KAUST.
dc.publisherElsevier BV
dc.subjectBlowoff
dc.subjectElectric fields
dc.subjectLaminar jet
dc.subjectPremixed flame
dc.subjectStabilization
dc.titleEffect of AC electric fields on the stabilization of premixed bunsen flames
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentCombustion and Laser Diagnostics Laboratory
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalProceedings of the Combustion Institute
dc.contributor.institutionSchool of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, South Korea
kaust.personKim, Minkuk
kaust.personChung, Suk Ho


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