Show simple item record

dc.contributor.authorAlfazazi, Adamu
dc.contributor.authorAl Omier, Abdullah Abdulaziz
dc.contributor.authorSecco, Andrea
dc.contributor.authorSelim, Hatem
dc.contributor.authorJu, Yiguang
dc.contributor.authorSarathy, Mani
dc.date.accessioned2018-02-06T06:07:30Z
dc.date.available2018-02-06T06:07:30Z
dc.date.issued2018-02-02
dc.identifier.citationAlfazazi A, Al-Omier A, Secco A, Selim H, Ju Y, et al. (2018) Cool diffusion flames of butane isomers activated by ozone in the counterflow. Combustion and Flame 191: 175–186. Available: http://dx.doi.org/10.1016/j.combustflame.2017.12.034.
dc.identifier.issn0010-2180
dc.identifier.doi10.1016/j.combustflame.2017.12.034
dc.identifier.urihttp://hdl.handle.net/10754/627039
dc.description.abstractIgnition in low temperature combustion engines is governed by a coupling between low-temperature oxidation kinetics and diffusive transport. Therefore, a detailed understanding of the coupled effects of heat release, low-temperature oxidation chemistry, and molecular transport in cool flames is imperative to the advancement of new combustion concepts. This study provides an understanding of the low temperature cool flame behavior of butane isomers in the counterflow configuration through the addition of ozone. The initiation and extinction limits of butane isomers’ cool flames have been investigated under a variety of strain rates. Results revealed that, with ozone addition, establishment of butane cool diffusion flames was successful at low and moderate strain rates. iso-Butane has lower reactivity than n-butane, as shown by higher fuel mole fractions needed for cool flame initiation and lower extinction strain rate limits. Ozone addition showed a significant influence on the initiation and sustenance of cool diffusion flames; as ozone-less cool diffusion flame of butane isomers could not be established even at high fuel mole fractions. The structure of a stable n-butane cool diffusion flame was qualitatively examined using a time of flight mass spectrometer. Numerical simulations were performed using a detailed chemical kinetic model and molecular transport to simulate the extinction limits of the cool diffusion flames of the tested fuels. The model qualitatively captured experimental trends for both fuels and ozone levels, but over-predicted extinction limits of the flames. Reactions involving low-temperature species predominantly govern extinction limits of cool flames. The simulations were used to understand the effects of methyl branching on the behavior of n-butane and iso-butane cool diffusion flames.
dc.description.sponsorshipThe presented work was supported by Saudi Aramco under the FUELCOM program and by the King Abdullah University of Science and Technology (KAUST) with competitive research funding given to the Clean Combustion Research Center (CCRC). Authors would like to thank Christopher B. Reuter of Mechanical Engineering, Princeton University for his assistance. We appreciate the valuable contributions of Nour Atef and Samah Y. Mohammed of Combustion and Pyrolysis Chemistry Team at KAUST.
dc.publisherElsevier BV
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0010218018300038
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Combustion and Flame. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Combustion and Flame, [, , (2018-02-02)] DOI: 10.1016/j.combustflame.2017.12.034 . © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectCool diffusion flames
dc.subjectCounterflow
dc.subjectButane isomers
dc.subjectOzone
dc.subjectMass spectrometer
dc.titleCool diffusion flames of butane isomers activated by ozone in the counterflow
dc.typeArticle
dc.contributor.departmentChemical Engineering Program
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentCombustion and Pyrolysis Chemistry (CPC) Group
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalCombustion and Flame
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Chemical Engineering, King Faisal University, Al-Ahsa 31982, Saudi Arabia
dc.contributor.institutionDipartimento di Chimica Industriale “Toso Montanari”, Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy
dc.contributor.institutionGE Power, Saudi GE Technology & Innovation Center, Dhahran 34464, Saudi Arabia
dc.contributor.institutionDepartment of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544, USA
kaust.personAlfazazi, Adamu
kaust.personAl Omier, Abdullah
kaust.personSecco, Andrea
kaust.personSelim, Hatem
kaust.personSarathy, Mani
refterms.dateFOA2020-02-02T00:00:00Z
dc.date.published-online2018-02-02
dc.date.published-print2018-05


Files in this item

Thumbnail
Name:
Manuscript_Final.pdf
Size:
994.9Kb
Format:
PDF
Description:
Accepted Manuscript
Thumbnail
Name:
Supplementary material_Graphs.docx
Size:
680.5Kb
Format:
Microsoft Word 2007
Description:
Supplemental files

This item appears in the following Collection(s)

Show simple item record