Investigation of soot morphology and particle size distrib ution in a turbulent nonpremixed flame via Monte Carlo simulations

Handle URI:
http://hdl.handle.net/10754/581488
Title:
Investigation of soot morphology and particle size distrib ution in a turbulent nonpremixed flame via Monte Carlo simulations
Authors:
Abdelgadir, Ahmed; Lucchesi, Marco; Attili, Antonio; Bisetti, Fabrizio ( 0000-0001-5162-7805 )
Abstract:
Recently, our group performed a set of direct numerical simulations (DNS) of soot formation and growth in a n-heptane three dimensional non-premixed jet flame [Attili et al., Proc. Comb. Inst, 35, 2015], [Attili et al., Comb. Flame, 161, 2014], [Bisetti et al.,Trans of the Royal Soc, 372, 2014]. The evolution of species relevant to soot formation and growth have been sampled along a large number of Lagrangian trajectories in the DNS. In this work, the DNS results are post-processed to compute the soot evolution along selected Lagrangian trajectories using a Monte Carlo method. An operator splitting approach is adopted to split the deterministic processes (nucleation, surface growth and oxidation) from coagulation, which is treated stochastically. The morphological properties of soot and the particlesize distribution are investigated. For trajectories that experience an early strong nucleation event, the particle size distribution is found to be bimodal, as the soot particles have enough time to coagulate and grow while it is unimodal for trajectories characterized by only late nucleation events. As a results, the average size distribution at two different crosswise positions in the flame is unimodal.
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/P5-01.pdf
Appears in Collections:
Conference Papers; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorAbdelgadir, Ahmeden
dc.contributor.authorLucchesi, Marcoen
dc.contributor.authorAttili, Antonioen
dc.contributor.authorBisetti, Fabrizioen
dc.date.accessioned2015-10-31T22:51:30Zen
dc.date.available2015-10-31T22:51:30Zen
dc.date.issued2015-03-30en
dc.identifier.urihttp://hdl.handle.net/10754/581488en
dc.description.abstractRecently, our group performed a set of direct numerical simulations (DNS) of soot formation and growth in a n-heptane three dimensional non-premixed jet flame [Attili et al., Proc. Comb. Inst, 35, 2015], [Attili et al., Comb. Flame, 161, 2014], [Bisetti et al.,Trans of the Royal Soc, 372, 2014]. The evolution of species relevant to soot formation and growth have been sampled along a large number of Lagrangian trajectories in the DNS. In this work, the DNS results are post-processed to compute the soot evolution along selected Lagrangian trajectories using a Monte Carlo method. An operator splitting approach is adopted to split the deterministic processes (nucleation, surface growth and oxidation) from coagulation, which is treated stochastically. The morphological properties of soot and the particlesize distribution are investigated. For trajectories that experience an early strong nucleation event, the particle size distribution is found to be bimodal, as the soot particles have enough time to coagulate and grow while it is unimodal for trajectories characterized by only late nucleation events. As a results, the average size distribution at two different crosswise positions in the flame is unimodal.en
dc.relation.urlhttp://www.ecm2015.hu/papers/P5-01.pdfen
dc.titleInvestigation of soot morphology and particle size distrib ution in a turbulent nonpremixed flame via Monte Carlo simulationsen
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.versionPost-printen
dc.contributor.institutionDipartimento di Ingegneria Meccanica ed Aerospaziale, Universita “La Sapienza” di Roma, 00184 Rome, Italyen
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