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dc.contributor.authorBelhi, Memdouh
dc.contributor.authorLee, Bok Jik
dc.contributor.authorBisetti, Fabrizio
dc.contributor.authorIm, Hon G.
dc.date.accessioned2017-10-24T10:45:41Z
dc.date.available2017-10-24T10:45:41Z
dc.date.issued2017-10-19
dc.identifier.citationBelhi M, Lee BJ, Bisetti F, Im HG (2017) A computational study of the effects of DC electric fields on non-premixed counterflow methane-air flames. Journal of Physics D: Applied Physics. Available: http://dx.doi.org/10.1088/1361-6463/aa94bb.
dc.identifier.issn0022-3727
dc.identifier.issn1361-6463
dc.identifier.doi10.1088/1361-6463/aa94bb
dc.identifier.urihttp://hdl.handle.net/10754/625929
dc.description.abstractTwo-dimensional axisymmetric simulations for counterflow nonpremixed methane-air flames were undertaken as an attempt to reproduce the experimentally observed electro-hydrodynamic effect, also known as the ionic wind effect, on flames. Incompressible fluid dynamic solver was implemented with a skeletal chemical kinetic mechanism and transport property evaluations. The simulation successfully reproduced the key characteristics of the flames subjected to DC bias voltages at different intensity and polarity. Most notably, the simulation predicted the flame positions and showed good qualitative agreement with experimental data for the current-voltage curve. The flame response to the electric field with positive and negative polarity exhibited qualitatively different characteristics. In the negative polarity of the configuration considered, a non-monotonic variation of the current with the voltage was observed along with the existence of an unstable regime at an intermediate voltage level. With positive polarity, a typical monotonic current-voltage curve was obtained. This behavior was attributed to the asymmetry in the distribution of the positive and negative ions resulting from ionization processes. The present study demonstrated that the mathematical and computational models for the ion chemistry, transport, and fluid dynamics were able to describe the key processes responsible for the flame-electric field interaction.
dc.description.sponsorshipThis research was funded by King Abdullah University of Science and Technology (KAUST) and made use of the computational resources managed by KAUST Supercomputing Lab (KSL).
dc.publisherIOP Publishing
dc.relation.urlhttp://iopscience.iop.org/article/10.1088/1361-6463/aa94bb
dc.rightsThis is an author-created, un-copyedited version of an article accepted for publication/published in Journal of Physics D: Applied Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://doi.org/10.1088/1361-6463/aa94bb
dc.subjectcounterflow flame
dc.subjectDC electric field
dc.subjectelectro-hydrodynamic force
dc.subjectpositive and negative charges
dc.titleA computational study of the effects of DC electric fields on non-premixed counterflow methane-air flames
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.identifier.journalJournal of Physics D: Applied Physics
dc.eprint.versionPost-print
dc.contributor.institutionGwangju Institute of Science and Technology, Gwangju, Korea (the Republic of)
dc.contributor.institutionUniversity of Texas at Austin Department of Mechanical Engineering, Austin, Texas, UNITED STATES
kaust.personBelhi, Memdouh
kaust.personIm, Hon G.


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