Comparison of soot formation for diesel and jet-a in a constant volume combustion chamber using two-color pyrometry

Handle URI:
http://hdl.handle.net/10754/564906
Title:
Comparison of soot formation for diesel and jet-a in a constant volume combustion chamber using two-color pyrometry
Authors:
Jing, Wei; Roberts, William L. ( 0000-0003-1999-2831 ) ; Fang, Tiegang
Abstract:
The measurement of the two-color line of sight soot and KL factor for NO.2 diesel and jet-A fuels was conducted in an optical constant volume combustion chamber by using a high speed camera under 1000 K ambient temperature and varied oxygen concentration conditions. The ambient conditions were set as follows: four oxygen cases including 10%, 15%, 18% and 21% at 1000 K ambient temperature. KL factor and soot temperature were determined based on the two-color pyrometry technique using two band-pass filters with wavelengths of 650 nm and 550 nm. The results show that low soot temperature is observed in the upstream inner flame along the centerline, which is surrounded by high soot temperature regions, and a high KL factor is found in the same region with a low soot temperature. The results under different times suggest that soot temperature is higher for high O2 conditions during the entire flame development; meanwhile, both integrated KL factor and soot area decrease with the increase of O2 concentration. The two fuels share a similar trend of soot temperature and KL factor, however, diesel flame has a higher soot temperature and a larger high soot temperature area compared to jet-A flame. On the other hand, diesel flame shows a lower soot level during the quasi-steady state with a higher total soot level at the end of the combustion under low O2 conditions. A lower O2 concentration range from 10% to 15% is expected to have the possibility to achieve a simultaneous reduction of soot and NOx in sooting flames under the 1000 K ambient temperature condition. Copyright © 2014 SAE International.
KAUST Department:
Mechanical Engineering Program; Physical Sciences and Engineering (PSE) Division; Clean Combustion Research Center
Publisher:
SAE International
Journal:
SAE Technical Paper Series
Conference/Event name:
SAE 2014 World Congress and Exhibition
Issue Date:
1-Apr-2014
DOI:
10.4271/2014-01-1251
Type:
Conference Paper
Appears in Collections:
Conference Papers; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorJing, Weien
dc.contributor.authorRoberts, William L.en
dc.contributor.authorFang, Tiegangen
dc.date.accessioned2015-08-04T07:24:44Zen
dc.date.available2015-08-04T07:24:44Zen
dc.date.issued2014-04-01en
dc.identifier.doi10.4271/2014-01-1251en
dc.identifier.urihttp://hdl.handle.net/10754/564906en
dc.description.abstractThe measurement of the two-color line of sight soot and KL factor for NO.2 diesel and jet-A fuels was conducted in an optical constant volume combustion chamber by using a high speed camera under 1000 K ambient temperature and varied oxygen concentration conditions. The ambient conditions were set as follows: four oxygen cases including 10%, 15%, 18% and 21% at 1000 K ambient temperature. KL factor and soot temperature were determined based on the two-color pyrometry technique using two band-pass filters with wavelengths of 650 nm and 550 nm. The results show that low soot temperature is observed in the upstream inner flame along the centerline, which is surrounded by high soot temperature regions, and a high KL factor is found in the same region with a low soot temperature. The results under different times suggest that soot temperature is higher for high O2 conditions during the entire flame development; meanwhile, both integrated KL factor and soot area decrease with the increase of O2 concentration. The two fuels share a similar trend of soot temperature and KL factor, however, diesel flame has a higher soot temperature and a larger high soot temperature area compared to jet-A flame. On the other hand, diesel flame shows a lower soot level during the quasi-steady state with a higher total soot level at the end of the combustion under low O2 conditions. A lower O2 concentration range from 10% to 15% is expected to have the possibility to achieve a simultaneous reduction of soot and NOx in sooting flames under the 1000 K ambient temperature condition. Copyright © 2014 SAE International.en
dc.publisherSAE Internationalen
dc.titleComparison of soot formation for diesel and jet-a in a constant volume combustion chamber using two-color pyrometryen
dc.typeConference Paperen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentClean Combustion Research Centeren
dc.identifier.journalSAE Technical Paper Seriesen
dc.conference.date8 April 2014 through 10 April 2014en
dc.conference.nameSAE 2014 World Congress and Exhibitionen
dc.conference.locationDetroit, MIen
dc.contributor.institutionNorth Carolina State Univ., United Statesen
kaust.authorRoberts, William L.en
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