DC field response of one-dimensional flames using an ionized layer model

Handle URI:
http://hdl.handle.net/10754/583275
Title:
DC field response of one-dimensional flames using an ionized layer model
Authors:
Xiong, Yuan ( 0000-0001-5328-3487 ) ; Park, Daegeun ( 0000-0002-6658-2096 ) ; Lee, Bok Jik; Chung, Suk-Ho ( 0000-0001-8782-312X ) ; Cha, Min Suk ( 0000-0003-4059-3421 )
Abstract:
We develop a simplified model to better explain electric current response when direct current (DC) is applied to a flame. In particular, different current responses have been observed by changing the polarity of the DC in a sub-saturated current regime that results from the presence of ions and electrons in the flame zone. A flame zone was modeled as a thin, ionized layer located in one-dimensional DC electric fields. We derived simplified model-governing equations from species equations by implementing mobility differences dependent on the type of charged particle, particularly between ions and electrons; we performed experiments to substantiate the model. Results showed that the sub-saturated current and local field intensity were significantly influenced by the polarity of the DC because of the combined effect of unequal mobility of charged particles and the position of the ionized layer in the gap relative to two electrodes. When an energized electrode is close to the ionized layer, applying a negative DC causes a more rapid increase in current than by applying a positive DC to the same electrode. Results from our experimental measurement of current using counterflow diffusion flames agreed qualitatively well with the model predictions. A sensitivity analysis using dimensional and non-dimensional parameters also supported the importance of the mobility difference and the relative location of the ionized layer on the electric current response.
KAUST Department:
Clean Combustion Research Center
Citation:
DC field response of one-dimensional flames using an ionized layer model 2015 Combustion and Flame
Publisher:
Elsevier BV
Journal:
Combustion and Flame
Issue Date:
18-Nov-2015
DOI:
10.1016/j.combustflame.2015.10.007
Type:
Article
ISSN:
00102180
Additional Links:
http://linkinghub.elsevier.com/retrieve/pii/S0010218015003545
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorXiong, Yuanen
dc.contributor.authorPark, Daegeunen
dc.contributor.authorLee, Bok Jiken
dc.contributor.authorChung, Suk-Hoen
dc.contributor.authorCha, Min Suken
dc.date.accessioned2015-12-06T08:45:27Zen
dc.date.available2015-12-06T08:45:27Zen
dc.date.issued2015-11-18en
dc.identifier.citationDC field response of one-dimensional flames using an ionized layer model 2015 Combustion and Flameen
dc.identifier.issn00102180en
dc.identifier.doi10.1016/j.combustflame.2015.10.007en
dc.identifier.urihttp://hdl.handle.net/10754/583275en
dc.description.abstractWe develop a simplified model to better explain electric current response when direct current (DC) is applied to a flame. In particular, different current responses have been observed by changing the polarity of the DC in a sub-saturated current regime that results from the presence of ions and electrons in the flame zone. A flame zone was modeled as a thin, ionized layer located in one-dimensional DC electric fields. We derived simplified model-governing equations from species equations by implementing mobility differences dependent on the type of charged particle, particularly between ions and electrons; we performed experiments to substantiate the model. Results showed that the sub-saturated current and local field intensity were significantly influenced by the polarity of the DC because of the combined effect of unequal mobility of charged particles and the position of the ionized layer in the gap relative to two electrodes. When an energized electrode is close to the ionized layer, applying a negative DC causes a more rapid increase in current than by applying a positive DC to the same electrode. Results from our experimental measurement of current using counterflow diffusion flames agreed qualitatively well with the model predictions. A sensitivity analysis using dimensional and non-dimensional parameters also supported the importance of the mobility difference and the relative location of the ionized layer on the electric current response.en
dc.language.isoenen
dc.publisherElsevier BVen
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0010218015003545en
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Combustion and Flame. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Combustion and Flame, 18 November 2015. DOI: 10.1016/j.combustflame.2015.10.007en
dc.subjectIon currenten
dc.subjectElectrically assisted combustionen
dc.subjectDirect currenten
dc.subjectFlameen
dc.titleDC field response of one-dimensional flames using an ionized layer modelen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalCombustion and Flameen
dc.eprint.versionPost-printen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorXiong, Yuanen
kaust.authorPark, Daegeunen
kaust.authorLee, Bok Jiken
kaust.authorChung, Suk-Hoen
kaust.authorCha, Min Suken
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