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dc.contributor.authorDonohoe, Nicola
dc.contributor.authorHeufer, Alexander
dc.contributor.authorMetcalfe, Wayne K.
dc.contributor.authorCurran, Henry J.
dc.contributor.authorDavis, Marissa L.
dc.contributor.authorMathieu, Olivier
dc.contributor.authorPlichta, Drew
dc.contributor.authorMorones, Anibal
dc.contributor.authorPetersen, Eric L.
dc.contributor.authorGüthe, Felix
dc.date.accessioned2016-11-01T15:43:06Z
dc.date.available2016-11-01T15:43:06Z
dc.date.issued2013-12-30
dc.identifier.citationDonohoe, N,Heufer, A,Metcalfe, WK,Curran, HJ,Davis, ML,Mathieu, O,Plichta, D,Morones, A,Petersen, EL,Guthe, F (2014) 'Ignition delay times, laminar flame speeds, and mechanism validation for natural gas/hydrogen blends at elevated pressures' Combustion and Flame, 161(6), 1432-1443. doi: http://dx.doi.org/10.1016/j.combustflame.2013.12.005en_IE
dc.identifier.issn1556-2921
dc.identifier.urihttp://hdl.handle.net/10379/6111
dc.description.abstractNew experimental ignition delay time data measured in both a shock tube and in a rapid compression machine were taken to determine the increase in reactivity due to the addition of hydrogen to mixtures of methane and natural gas. Test conditions were determined using a statistical design of experiments approach which allows the experimenter to probe a wide range of variable factors with a comparatively low number of experimental trials. Experiments were performed at 1, 10, and 30 atm in the temperature range 850-1800 K, at equivalence ratios of 0.3, 0.5, and 1.0 and with dilutions ranging from 72% to 90% by volume. Pure methane- and hydrogen-fueled mixtures were prepared in addition to two synthetic 'natural gas'-fueled mixtures comprising methane, ethane, propane, n-butane and n-pentane, one comprising 81.25/10/5/2.511.25% while the other consisted of 62.5/20/10/5/2.5% C-1/C-2/C-3/C-4/Cs components to encompass a wide range of possible natural gas compositions. A heated, constant-volume combustion vessel was also utilized to experimentally determine laminar flame speed for the same baseline range of fuels. In this test, a parametric sweep of equivalence ratio, 0.7-1.3, was conducted at each condition, and the hydrogen content was varied from 50% to 90% by volume. The initial temperature and pressure varied from 300 to 450 K and 1 to 5 atm, respectively. Flame speed experiments conducted above atmospheric pressure utilized a 1:6 oxygen-to-helium ratio to curb the hydrodynamic and thermal instabilities that arise when conducting laminar flame speed experiments. All experiments were simulated using a detailed chemical kinetic model. Overall good agreement is observed between the simulations and the experimental results. A discussion of the important reactions promoting and inhibiting reactivity is included. (C) 2013 The Combustion Institute. Published by Elsevier Inc. All rights reserved.en_IE
dc.description.sponsorshipThis work was supported by Science Foundation Ireland under Grant No. [08/IN1./I2055]. We also acknowledge the support of Alstom Power Ltd. A. Morones was supported by CONANCYT of Mexico and CIDESI, and M. Davis was supported in part by a Graduate Diversity Fellowship from Texas A&M University.en_IE
dc.formatapplication/pdfen_IE
dc.language.isoenen_IE
dc.publisherElsevieren_IE
dc.relation.ispartofCombustion And Flameen
dc.subjectHydrogenen_IE
dc.subjectNatural gasen_IE
dc.subjectRapid compression machineen_IE
dc.subjectShock tubeen_IE
dc.subjectFlame speeden_IE
dc.subjectChemistryen_IE
dc.subjectRapid compression machineen_IE
dc.subjectMethane air mixturesen_IE
dc.subjectBurning velocitiesen_IE
dc.subjectHydrogen airen_IE
dc.subjectShock wavesen_IE
dc.subjectFuel blendsen_IE
dc.subjectOxidationen_IE
dc.subjectHydrocarbonen_IE
dc.subjectAutignitionen_IE
dc.subjectTemperatureen_IE
dc.titleIgnition delay times, laminar flame speeds, and mechanism validation for natural gas/hydrogen blends at elevated pressuresen_IE
dc.typeArticleen_IE
dc.date.updated2016-10-20T09:52:37Z
dc.identifier.doi10.1016/j.combustflame.2013.12.005
dc.local.publishedsourcehttp://dx.doi.org/10.1016/j.combustflame.2013.12.005en_IE
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funder|~|
dc.internal.rssid6513555
dc.local.contactHenry Curran, Dept Of Chemistry, Room 215, Arts/Science Building, Nui Galway. 3856 Email: henry.curran@nuigalway.ie
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dc.local.versionACCEPTED
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