Soot particle size measurements in ethylene diffusion flames at elevated pressures

Handle URI:
http://hdl.handle.net/10754/622251
Title:
Soot particle size measurements in ethylene diffusion flames at elevated pressures
Authors:
Steinmetz, Scott ( 0000-0003-1101-4662 ) ; Fang, Tiegang; Roberts, William L. ( 0000-0003-1999-2831 )
Abstract:
Soot particle size is investigated in laminar nitrogen-diluted ethylene coflow diffusion flames at 4, 8, 12 and 16 atm. Line of sight attenuation and scattering are used to measure two-dimensional soot volume fraction and particle size fields for the first time at elevated pressures. Soot volume fraction dependence on pressure is consistent with the observations of similar studies, scaling approximately with the square of pressure. Scattering intensity is analyzed through Rayleigh and Rayleigh-Debye-Gans polydisperse fractal aggregate theories to provide two estimates of particle size. An increase in overall particle sizes with pressure is found, consistent with similar one-dimensional studies. Particle diameters in the annulus of the flame increase faster with pressure than those on centerline. Contrary to previous studies, the dependence of particle size on pressure was found to taper off between 8 and 12 atm, with little observed growth beyond 12 atm. The measurements provide additional data for one of the International Sooting Flame (ISF) workshop's target pressurized flames.
KAUST Department:
Clean Combustion Research Center
Citation:
Steinmetz SA, Fang T, Roberts WL (2016) Soot particle size measurements in ethylene diffusion flames at elevated pressures. Combustion and Flame 169: 85–93. Available: http://dx.doi.org/10.1016/j.combustflame.2016.02.034.
Publisher:
Elsevier BV
Journal:
Combustion and Flame
Issue Date:
7-May-2016
DOI:
10.1016/j.combustflame.2016.02.034
Type:
Article
ISSN:
0010-2180
Sponsors:
The research reported in this work was funded by the U.S. Army Research Office under grant W911NF-10-1-0118, and by the Clean Combustion Research Center at King Abdullah University of Science and Technology.
Appears in Collections:
Articles; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorSteinmetz, Scotten
dc.contributor.authorFang, Tiegangen
dc.contributor.authorRoberts, William L.en
dc.date.accessioned2017-01-02T08:42:40Z-
dc.date.available2017-01-02T08:42:40Z-
dc.date.issued2016-05-07en
dc.identifier.citationSteinmetz SA, Fang T, Roberts WL (2016) Soot particle size measurements in ethylene diffusion flames at elevated pressures. Combustion and Flame 169: 85–93. Available: http://dx.doi.org/10.1016/j.combustflame.2016.02.034.en
dc.identifier.issn0010-2180en
dc.identifier.doi10.1016/j.combustflame.2016.02.034en
dc.identifier.urihttp://hdl.handle.net/10754/622251-
dc.description.abstractSoot particle size is investigated in laminar nitrogen-diluted ethylene coflow diffusion flames at 4, 8, 12 and 16 atm. Line of sight attenuation and scattering are used to measure two-dimensional soot volume fraction and particle size fields for the first time at elevated pressures. Soot volume fraction dependence on pressure is consistent with the observations of similar studies, scaling approximately with the square of pressure. Scattering intensity is analyzed through Rayleigh and Rayleigh-Debye-Gans polydisperse fractal aggregate theories to provide two estimates of particle size. An increase in overall particle sizes with pressure is found, consistent with similar one-dimensional studies. Particle diameters in the annulus of the flame increase faster with pressure than those on centerline. Contrary to previous studies, the dependence of particle size on pressure was found to taper off between 8 and 12 atm, with little observed growth beyond 12 atm. The measurements provide additional data for one of the International Sooting Flame (ISF) workshop's target pressurized flames.en
dc.description.sponsorshipThe research reported in this work was funded by the U.S. Army Research Office under grant W911NF-10-1-0118, and by the Clean Combustion Research Center at King Abdullah University of Science and Technology.en
dc.publisherElsevier BVen
dc.subjectAggregateen
dc.subjectHigh pressureen
dc.subjectParticleen
dc.subjectScatteringen
dc.subjectSooten
dc.titleSoot particle size measurements in ethylene diffusion flames at elevated pressuresen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalCombustion and Flameen
dc.contributor.institutionDepartment of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, 27606, United Statesen
kaust.authorSteinmetz, Scotten
kaust.authorRoberts, William L.en
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