Effects of Large Polycyclic Aromatic Hydrocarbons on the Soot Formation in Ethylene-Air Nonpremixed Flames

Handle URI:
http://hdl.handle.net/10754/581491
Title:
Effects of Large Polycyclic Aromatic Hydrocarbons on the Soot Formation in Ethylene-Air Nonpremixed Flames
Authors:
Prabhu, S.; Arias, P.G.; Wang, Y.; Gao, Y.; Park, S.; Im, Hong G. ( 0000-0001-7080-1266 ) ; Sarathy, S. Mani ( 0000-0002-3975-6206 ) ; Chung, Suk-Ho ( 0000-0001-8782-312X ) ; Lu, T.
Abstract:
This study presents updated comprehensive gas-phase kinetic mechanism and aerosol models to predict soot formation characteristics in ethylene-air nonpremixed flames. A main objective is to investigate the sensitivity of the soot formation rate to various chemical pathways for large polycyclic aromatic hydrocarbons (PAH). In this study, the detailed chemical mechanism was reduced from 397 to 99 species using directed relation graph (DRG) and sensitivity analysis. The method of moments with interpolative closure (MOMIC) was employed for the soot aerosol model. Counterflow nonpremixed flames of pure ethylene at low strain rate sooting conditions are considered, for which the sensitivity of soot formation characteristics with respect to hetrogeneous nucleation is investigated. Results show that higher PAH concentrations result in higher soot nucleation rate, and that the average size of the particles are in good agreement with experimental results. It is found that the nucleation processes (i.e., soot inception) from higher PAH precursors, coronene in particular, is critical for accurate prediction of the overall soot formation.
KAUST Department:
Clean Combustion Research Center
Journal:
Proceedings of the European Combustion Meeting 2015
Conference/Event name:
the 7th European Combustion Meeting (ECM 2015)
Issue Date:
30-Mar-2015
Type:
Conference Paper
Additional Links:
http://www.ecm2015.hu/papers/P5-12.pdf
Appears in Collections:
Conference Papers; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorPrabhu, S.en
dc.contributor.authorArias, P.G.en
dc.contributor.authorWang, Y.en
dc.contributor.authorGao, Y.en
dc.contributor.authorPark, S.en
dc.contributor.authorIm, Hong G.en
dc.contributor.authorSarathy, S. Manien
dc.contributor.authorChung, Suk-Hoen
dc.contributor.authorLu, T.en
dc.date.accessioned2015-10-31T22:52:42Zen
dc.date.available2015-10-31T22:52:42Zen
dc.date.issued2015-03-30en
dc.identifier.urihttp://hdl.handle.net/10754/581491en
dc.description.abstractThis study presents updated comprehensive gas-phase kinetic mechanism and aerosol models to predict soot formation characteristics in ethylene-air nonpremixed flames. A main objective is to investigate the sensitivity of the soot formation rate to various chemical pathways for large polycyclic aromatic hydrocarbons (PAH). In this study, the detailed chemical mechanism was reduced from 397 to 99 species using directed relation graph (DRG) and sensitivity analysis. The method of moments with interpolative closure (MOMIC) was employed for the soot aerosol model. Counterflow nonpremixed flames of pure ethylene at low strain rate sooting conditions are considered, for which the sensitivity of soot formation characteristics with respect to hetrogeneous nucleation is investigated. Results show that higher PAH concentrations result in higher soot nucleation rate, and that the average size of the particles are in good agreement with experimental results. It is found that the nucleation processes (i.e., soot inception) from higher PAH precursors, coronene in particular, is critical for accurate prediction of the overall soot formation.en
dc.relation.urlhttp://www.ecm2015.hu/papers/P5-12.pdfen
dc.titleEffects of Large Polycyclic Aromatic Hydrocarbons on the Soot Formation in Ethylene-Air Nonpremixed Flamesen
dc.typeConference Paperen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalProceedings of the European Combustion Meeting 2015en
dc.conference.date30th March to 2nd April, 2015en
dc.conference.namethe 7th European Combustion Meeting (ECM 2015)en
dc.conference.locationBudapest, Hungaryen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Mechanical Engineering, University of Connecticut, Storrs, CT, USAen
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