Sooting limit in counterflow diffusion flames of ethylene/propane fuels and implication to threshold soot index

Handle URI:
http://hdl.handle.net/10754/562596
Title:
Sooting limit in counterflow diffusion flames of ethylene/propane fuels and implication to threshold soot index
Authors:
Joo, Peter H.; Wang, Yu ( 0000-0001-8795-9174 ) ; Raj, Abhijeet; Chung, Suk-Ho ( 0000-0001-8782-312X )
Abstract:
Sooting limits in counterflow diffusion flames of propane/ethylene fuels have been studied experimentally using a light scattering technique, including the effects of dilution, fuel mixing, and strain rate. The results are discussed in view of the threshold soot index (TSI). In soot-formation (SF) flames, where the flame is located on the oxidizer side of the stagnation plane, the sooting limit depends critically on fuel type and subsequently on flame temperature. The sooting limit has a non-linear dependence on the fuel-mixing ratio, which is similar to the non-linear mixing rule for TSI observed experimentally in rich premixed flames, where soot oxidation is absent for both SF and rich premixed flames. In soot-formation-oxidation (SFO) flames, where the flame is located on the fuel side, the sooting limit depends critically on flame temperature, while it is relatively independent on fuel type. This result suggests a linear mixing rule for sooting limits in SFO flames, which is similar to the TSI behavior for coflow diffusion flames. Soot oxidation takes place for both types of flames. The aerodynamic strain effect on the sooting limits has also been studied and an appreciable influence has been observed. Under sooting conditions, soot volume fraction was measured using a light extinction technique. The soot loadings in SF flames of the mixture fuels demonstrated a synergistic effect, i.e., soot production increased for certain mixture fuels as compared to the respective singlecomponent fuels. © 2012 The Combustion Institute.
KAUST Department:
Clean Combustion Research Center; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Combustion and Laser Diagnostics Laboratory
Publisher:
Elsevier
Journal:
Proceedings of the Combustion Institute
Issue Date:
Jan-2013
DOI:
10.1016/j.proci.2012.06.124
Type:
Article
ISSN:
15407489
Sponsors:
This work is supported by Saudi Aramco through KAUST CCRC.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorJoo, Peter H.en
dc.contributor.authorWang, Yuen
dc.contributor.authorRaj, Abhijeeten
dc.contributor.authorChung, Suk-Hoen
dc.date.accessioned2015-08-03T10:44:08Zen
dc.date.available2015-08-03T10:44:08Zen
dc.date.issued2013-01en
dc.identifier.issn15407489en
dc.identifier.doi10.1016/j.proci.2012.06.124en
dc.identifier.urihttp://hdl.handle.net/10754/562596en
dc.description.abstractSooting limits in counterflow diffusion flames of propane/ethylene fuels have been studied experimentally using a light scattering technique, including the effects of dilution, fuel mixing, and strain rate. The results are discussed in view of the threshold soot index (TSI). In soot-formation (SF) flames, where the flame is located on the oxidizer side of the stagnation plane, the sooting limit depends critically on fuel type and subsequently on flame temperature. The sooting limit has a non-linear dependence on the fuel-mixing ratio, which is similar to the non-linear mixing rule for TSI observed experimentally in rich premixed flames, where soot oxidation is absent for both SF and rich premixed flames. In soot-formation-oxidation (SFO) flames, where the flame is located on the fuel side, the sooting limit depends critically on flame temperature, while it is relatively independent on fuel type. This result suggests a linear mixing rule for sooting limits in SFO flames, which is similar to the TSI behavior for coflow diffusion flames. Soot oxidation takes place for both types of flames. The aerodynamic strain effect on the sooting limits has also been studied and an appreciable influence has been observed. Under sooting conditions, soot volume fraction was measured using a light extinction technique. The soot loadings in SF flames of the mixture fuels demonstrated a synergistic effect, i.e., soot production increased for certain mixture fuels as compared to the respective singlecomponent fuels. © 2012 The Combustion Institute.en
dc.description.sponsorshipThis work is supported by Saudi Aramco through KAUST CCRC.en
dc.publisherElsevieren
dc.subjectCounterflow diffusion flameen
dc.subjectSooten
dc.subjectSooting limiten
dc.subjectSynergistic effecten
dc.subjectThreshold soot index (TSI)en
dc.titleSooting limit in counterflow diffusion flames of ethylene/propane fuels and implication to threshold soot indexen
dc.typeArticleen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.contributor.departmentCombustion and Laser Diagnostics Laboratoryen
dc.identifier.journalProceedings of the Combustion Instituteen
kaust.authorWang, Yuen
kaust.authorRaj, Abhijeeten
kaust.authorChung, Suk-Hoen
kaust.authorJoo, Peter H.en
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