Show simple item record

dc.contributor.authorWang, Zhandong
dc.contributor.authorSarathy, Mani
dc.date.accessioned2016-11-03T13:24:27Z
dc.date.available2016-11-03T13:24:27Z
dc.date.issued2016-01-20
dc.identifier.citationWang Z, Sarathy SM (2016) Third O2 addition reactions promote the low-temperature auto-ignition of n-alkanes. Combustion and Flame 165: 364–372. Available: http://dx.doi.org/10.1016/j.combustflame.2015.12.020.
dc.identifier.issn0010-2180
dc.identifier.doi10.1016/j.combustflame.2015.12.020
dc.identifier.urihttp://hdl.handle.net/10754/621765
dc.description.abstractComprehensive low-temperature oxidation mechanisms are needed to accurately predict fuel auto-ignition properties. This paper studies the effects of a previously unconsidered third O2 addition reaction scheme on the simulated auto-ignition of n-alkanes. We demonstrate that this extended low-temperature oxidation scheme has a minor effect on the simulation of n-pentane ignition; however, its addition significantly improves the prediction of n-hexane auto-ignition under low-temperature rapid compression machine conditions. Additional simulations of n-hexane in a homogeneous charge compression ignition engine show that engine-operating parameters (e.g., intake temperature and combustion phasing) are significantly altered when the third O2 addition kinetic mechanism is considered. The advanced combustion phasing is initiated by the formation and destruction of additional radical chain-branching intermediates produced in the third O2 addition process, e.g. keto-dihydroperoxides and/or keto-hydroperoxy cyclic ethers. Our results indicate that third O2 addition reactions accelerate low-temperature radical chain branching at conditions of relevance to advance engine technologies, and therefore these chemical pathways should also be considered for n-alkanes with 6 or more carbon atoms. © 2015 The Combustion Institute.
dc.description.sponsorshipThe research reported in this publication 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). We are grateful for scientific discussions with researchers at Lawrence Livermore National Laboratory (William J. Pitz, Marco Mehl, and Charles K. Westbrook) and National University of Ireland Galway (Henry J. Curran, John Bugler, and Kuiwen Zhang).
dc.publisherElsevier BV
dc.relation.urlhttp://api.elsevier.com/content/search/scidir?query=pii%28S0010218015004630%29&view=STANDARD
dc.subjectAlternative isomerization
dc.subjectAtmospheric oxidation
dc.subjectAuto-oxidation
dc.subjectChain branching
dc.subjectPeroxy chemistry
dc.titleThird O2 addition reactions promote the low-temperature auto-ignition of n-alkanes
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
kaust.personWang, Zhandong
kaust.personSarathy, Mani
kaust.acknowledged.supportUnitClean Combustion Research Center (CCRC)
kaust.acknowledged.supportUnitCompetitive Research Funding
dc.date.published-online2016-01-20
dc.date.published-print2016-03


This item appears in the following Collection(s)

Show simple item record