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dc.contributor.author
Kelesidis, Georgios A.
dc.contributor.author
Pratsinis, Sotiris E.
dc.date.accessioned
2021-04-12T07:34:20Z
dc.date.available
2020-09-22T07:03:52Z
dc.date.available
2020-09-24T10:08:49Z
dc.date.available
2020-12-17T13:33:48Z
dc.date.available
2021-04-12T07:34:20Z
dc.date.issued
2021
dc.identifier.issn
1540-7489
dc.identifier.issn
1873-2704
dc.identifier.other
10.1016/j.proci.2020.07.055
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/441770
dc.description.abstract
The soot volume fraction, fv, is essential for combustion engineering, air quality and climate modeling. It is commonly obtained from mobility or optical data assuming soot spheres of constant composition that tend to overestimate fv by up to an order of magnitude. Here, a method is presented for estimation of the fv from soot mobility or optical diagnostics data accounting for the realistic soot morphology and composition. With mobility data, the fv is determined by a relation for soot morphology (fractal-like structure) and the average primary particle diameter from microscopy, gas adsorption or power laws. Such fv and the corresponding soot volume/mass size distributions are in excellent agreement with accurate but tedious soot mass-mobility measurements in premixed flames along various heights above the burner (HAB) as well as from the exhaust of diffusion flames and diesel engines. With light extinction data, the fv is obtained by explicitly accounting for soot composition (through its optical band gap and refractive index, RI) and the light absorption enhancement (due to multiple light scattering within soot agglomerates) in the absorption function, E(RI). So as nascent soot matures by surface growth and agglomeration, its optical band gap decreases while its mobility diameter, carbon to hydrogen (C/H) ratio and fv increase, increasing the soot E(RI) from 0.22 to 0.40, in excellent agreement with laser induced incandescence data from flat premixed ethylene flames. Using this variable E(RI), the soot fv from light extinction data in these flames is up to 50% lower than that using standard constant E(RI) for soot spheres.
en_US
dc.language.iso
en
en_US
dc.publisher
Elsevier
en_US
dc.subject
Soot volume fraction
en_US
dc.subject
Laser diagnostics
en_US
dc.subject
Mobility size distribution
en_US
dc.subject
Maturity
en_US
dc.subject
Morphology
en_US
dc.title
Determination of the volume fraction of soot accounting for its composition and morphology
en_US
dc.type
Journal Article
dc.date.published
2020-09-19
ethz.journal.title
Proceedings of the Combustion Institute
ethz.journal.volume
38
en_US
ethz.journal.issue
1
en_US
ethz.journal.abbreviated
Proc. Combust. Inst.
ethz.pages.start
1189
en_US
ethz.pages.end
1196
en_US
ethz.grant
Tailor-made Carbonaceous Nanoparticles by Multiscale Combustion Design
en_US
ethz.grant
Multifunctional nanoparticles for targeted theranostics
en_US
ethz.grant
Integrated system for in operando characterization and development of portable breath analyzers
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
San Diego, CA
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::02668 - Inst. f. Energie- und Verfahrenstechnik / Inst. Energy and Process Engineering::03510 - Pratsinis, Sotiris E. / Pratsinis, Sotiris E.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02130 - Dep. Maschinenbau und Verfahrenstechnik / Dep. of Mechanical and Process Eng.::02668 - Inst. f. Energie- und Verfahrenstechnik / Inst. Energy and Process Engineering::03510 - Pratsinis, Sotiris E. / Pratsinis, Sotiris E.
en_US
ethz.grant.agreementno
182668
ethz.grant.agreementno
163243
ethz.grant.agreementno
170729
ethz.grant.fundername
SNF
ethz.grant.fundername
SNF
ethz.grant.fundername
SNF
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.funderDoi
10.13039/501100001711
ethz.grant.program
R'Equip
ethz.grant.program
Projekte MINT
ethz.grant.program
Projekte MINT
ethz.date.deposited
2020-09-22T07:04:05Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-04-12T07:34:43Z
ethz.rosetta.lastUpdated
2022-03-29T06:29:03Z
ethz.rosetta.versionExported
true
ethz.COinS
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