A computational study of the effects of DC electric fields on non-premixed counterflow methane-air flames

Handle URI:
http://hdl.handle.net/10754/625929
Title:
A computational study of the effects of DC electric fields on non-premixed counterflow methane-air flames
Authors:
Belhi, Memdouh ( 0000-0003-4307-4950 ) ; Lee, Bok Jik; Bisetti, Fabrizio; Im, Hon G.
Abstract:
Two-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.
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division
Citation:
Belhi 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.
Publisher:
IOP Publishing
Journal:
Journal of Physics D: Applied Physics
Issue Date:
19-Oct-2017
DOI:
10.1088/1361-6463/aa94bb
Type:
Article
ISSN:
0022-3727; 1361-6463
Sponsors:
This 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).
Additional Links:
http://iopscience.iop.org/article/10.1088/1361-6463/aa94bb
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorBelhi, Memdouhen
dc.contributor.authorLee, Bok Jiken
dc.contributor.authorBisetti, Fabrizioen
dc.contributor.authorIm, Hon G.en
dc.date.accessioned2017-10-24T10:45:41Z-
dc.date.available2017-10-24T10:45:41Z-
dc.date.issued2017-10-19en
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.en
dc.identifier.issn0022-3727en
dc.identifier.issn1361-6463en
dc.identifier.doi10.1088/1361-6463/aa94bben
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.en
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).en
dc.publisherIOP Publishingen
dc.relation.urlhttp://iopscience.iop.org/article/10.1088/1361-6463/aa94bben
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/aa94bben
dc.subjectcounterflow flameen
dc.subjectDC electric fielden
dc.subjectelectro-hydrodynamic forceen
dc.subjectpositive and negative chargesen
dc.titleA computational study of the effects of DC electric fields on non-premixed counterflow methane-air flamesen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalJournal of Physics D: Applied Physicsen
dc.eprint.versionPost-printen
dc.contributor.institutionGwangju Institute of Science and Technology, Gwangju, Korea (the Republic of)en
dc.contributor.institutionUniversity of Texas at Austin Department of Mechanical Engineering, Austin, Texas, UNITED STATESen
kaust.authorBelhi, Memdouhen
kaust.authorIm, Hon G.en
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