Soot reduction under DC electric fields in counterflow non-premixed laminar ethylene flames

Handle URI:
http://hdl.handle.net/10754/564909
Title:
Soot reduction under DC electric fields in counterflow non-premixed laminar ethylene flames
Authors:
Park, Daegeun ( 0000-0002-6658-2096 ) ; Choi, Byungchul; Cha, Min Suk ( 0000-0003-4059-3421 ) ; Chung, Suk-Ho ( 0000-0001-8782-312X )
Abstract:
The effects of DC electric fields on non-premixed ethylene flames in a counterflow burner were studied experimentally with a focus on the reduction of soot particles. The experiment was conducted by connecting a high voltage terminal and a ground terminal to a lower (fuel) and upper (oxidizer) nozzle, respectively. We applied direct current (DC) potentials in a range of -5 kV < Vdc < 5 kV. Uniform electric fields were then generated in the gap between the two nozzles. The experimental conditions were selected to cover both soot formation (SF) and soot formation oxidation (SFO) flames. The flames subjected to the negative electric fields moved toward the fuel nozzle because of an ionic wind due to the Lorentz force acting on the positive ions in the flames. In addition, the yellow luminosity significantly decreased, indicating changes in the sooting characteristics. To analyze the sooting characteristics under the electric fields, planar laser induced incandescence (PLII) and fluorescence (PLIF) techniques were used to visualize the soot, polycyclic aromatic hydrocarbons (PAHs), and OH radicals. The sooting limits in terms of the fuel and oxygen mole fractions were measured. No substantial soot formation due to the effects of the DC electric fields for the tested range of voltages and reactant mole fractions could be identified. The detailed flame behaviors and sooting characteristics under the DC electric fields are discussed. Copyright © Taylor & Francis Group, LLC.
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Combustion and Laser Diagnostics Laboratory
Publisher:
Informa UK Limited
Journal:
Combustion Science and Technology
Issue Date:
23-Apr-2014
DOI:
10.1080/00102202.2014.883794
Type:
Article
ISSN:
00102202
Sponsors:
This work was supported by the KAUST AEA Project.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorPark, Daegeunen
dc.contributor.authorChoi, Byungchulen
dc.contributor.authorCha, Min Suken
dc.contributor.authorChung, Suk-Hoen
dc.date.accessioned2015-08-04T07:24:50Zen
dc.date.available2015-08-04T07:24:50Zen
dc.date.issued2014-04-23en
dc.identifier.issn00102202en
dc.identifier.doi10.1080/00102202.2014.883794en
dc.identifier.urihttp://hdl.handle.net/10754/564909en
dc.description.abstractThe effects of DC electric fields on non-premixed ethylene flames in a counterflow burner were studied experimentally with a focus on the reduction of soot particles. The experiment was conducted by connecting a high voltage terminal and a ground terminal to a lower (fuel) and upper (oxidizer) nozzle, respectively. We applied direct current (DC) potentials in a range of -5 kV < Vdc < 5 kV. Uniform electric fields were then generated in the gap between the two nozzles. The experimental conditions were selected to cover both soot formation (SF) and soot formation oxidation (SFO) flames. The flames subjected to the negative electric fields moved toward the fuel nozzle because of an ionic wind due to the Lorentz force acting on the positive ions in the flames. In addition, the yellow luminosity significantly decreased, indicating changes in the sooting characteristics. To analyze the sooting characteristics under the electric fields, planar laser induced incandescence (PLII) and fluorescence (PLIF) techniques were used to visualize the soot, polycyclic aromatic hydrocarbons (PAHs), and OH radicals. The sooting limits in terms of the fuel and oxygen mole fractions were measured. No substantial soot formation due to the effects of the DC electric fields for the tested range of voltages and reactant mole fractions could be identified. The detailed flame behaviors and sooting characteristics under the DC electric fields are discussed. Copyright © Taylor & Francis Group, LLC.en
dc.description.sponsorshipThis work was supported by the KAUST AEA Project.en
dc.publisherInforma UK Limiteden
dc.subjectCounterflowen
dc.titleSoot reduction under DC electric fields in counterflow non-premixed laminar ethylene flamesen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentCombustion and Laser Diagnostics Laboratoryen
dc.identifier.journalCombustion Science and Technologyen
dc.contributor.institutionShip and Plant Research Team, Korean Register of Shipping, Seoul, South Koreaen
kaust.authorCha, Min Suken
kaust.authorChung, Suk-Hoen
kaust.authorPark, Daegeunen
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