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dc.contributor.authorMével, Rémy
dc.contributor.authorChatelain, Karl P.
dc.contributor.authorLapointe, Simon
dc.contributor.authorLacoste, Deanna
dc.contributor.authorIdir, Mahmoud
dc.contributor.authorDupré, Gabrielle
dc.contributor.authorChaumeix, Nabiha
dc.date.accessioned2020-08-17T11:06:11Z
dc.date.available2020-08-17T11:06:11Z
dc.date.issued2020-08-11
dc.date.submitted2020-04-24
dc.identifier.citationMével, R., Chatelain, K. P., Lapointe, S., Lacoste, D. A., Idir, M., Dupré, G., & Chaumeix, N. (2020). Spherically expanding flame in silane–hydrogen–nitrous oxide–argon mixtures. Combustion and Flame, 221, 150–159. doi:10.1016/j.combustflame.2020.07.032
dc.identifier.issn1556-2921
dc.identifier.issn0010-2180
dc.identifier.doi10.1016/j.combustflame.2020.07.032
dc.identifier.urihttp://hdl.handle.net/10754/664633
dc.description.abstractThe effect of silane addition on the laminar flame speed (Su0) of flames propagating in hydrogen–nitrous oxide–argon mixtures has been investigated experimentally for the first time using the spherically expanding flame technique in a constant volume combustion chamber. Replacing hydrogen by silane and maintaining the equivalence ratio constant, much higher flame speeds, explosion peak pressures, and pressure rise coefficients were measured. A previously developed detailed reaction model has been updated based on ab initio thermodynamic properties calculations and collision limit violation analysis. The improved reaction model demonstrates encouraging performance in predicting the flame speed, with a mean absolute error below 11%. To explain the effect of silane addition on the flame dynamics, a number of parameters have been calculated including OH and H rate of production, heat release rate per reaction, and sensitivity coefficient on Su0. The dynamics of freely propagating flames in SiH4–H2–N2O–Ar mixtures is essentially controlled by reactions of the H–O–N chemical system: N2O+H=N2+OH, OH+H2=H2O+H, and N2O(+M)=N2+O(+M). Whereas silane addition does not influence much the rate of production of OH, it significantly modifies that of H with a number of pyrolytic chemical pathways of silicon hydrides, such as SiH+H2=SiH2+H and Si+H2=SiH+H, which act as sink of H atom as they proceed in the backward direction. The reactions forming SiO(s) and SiO2(s), such as SiO+OH=SiO2(s)+H and 2SiO=2SiO(s), are exothermic and significantly contribute to the temperature increase. The adiabatic, constant pressure flame temperature for mixture containing silane is significantly higher, up to several 100’s K. The increase of Su0 induced by silane addition seems to be mostly related to the large increase of the flame temperature which leads to higher energy release rate.
dc.description.sponsorshipRemy Mevel was supported by a start-up fund of the Center for Combustion Energy of Tsinghua University, the 1000 Young Talents Program of China, and the 1000 Young Talents Matching Fund of Tsinghua University. The work at Lawrence Livermore National Laboratory was supported by the U.S. Department of Energy and performed under contract DE-AC52-07NA27344. Partial support was provided by the King Abdullah University of Science and Technology, through the baseline fund BAS/1/1396-01-01. The authors are grateful to Pr Zheng Chen for useful discussions.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0010218020303023
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, [221, , (2020-08-11)] DOI: 10.1016/j.combustflame.2020.07.032 . © 2020. 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.titleSpherically expanding flame in silane–hydrogen–nitrous oxide–argon mixtures
dc.typeArticle
dc.contributor.departmentClean Combustion Research Center
dc.contributor.departmentMechanical Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalCombustion and Flame
dc.rights.embargodate2021-07-20
dc.eprint.versionPost-print
dc.contributor.institutionCenter for Combustion Energy, School of Vehicle and Mobility, State Key Laboratory for Automotive Safety and Energy, Tsinghua University, Beijing, China
dc.contributor.institutionLawrence Livermore National Laboratory, Livermore, USA
dc.contributor.institutionCNRS-ICARE, Institut de Combustion, Aérothermique, Réactivité et Environnement, Orléans France
dc.contributor.institutionUniversité d'Orléans, Orléans, France
dc.identifier.volume221
dc.identifier.pages150-159
kaust.personChatelain, Karl P.
kaust.personLacoste, Deanna
kaust.grant.numberBAS/1/1396-01-01
dc.date.accepted2020-04-21
dc.identifier.eid2-s2.0-85089234490
refterms.dateFOA2020-08-18T06:24:11Z
dc.date.published-online2020-08-11
dc.date.published-print2020-11


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