laminar burning speed measurement, autoignition and flame structure study of spherically expanding flames

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1、LAMINARBURNINGSPEEDMEASUREMENT,AUTOIGNITIONANDFLAMESTRUCTURESTUDYOFSPHERICALLYEXPANDINGFLAMESADissertationPresentedbyAliMoghaddastoTheDepartmentofMechanicalandIndustrialEngineeringInpartialfulfillmentoftherequirementsforthedegreeofDoctorofPhilosophyinthefieldof

2、MechanicalEngineeringNortheasternUniversityBoston,MassachusettsOctober2015ProQuestNumber:3741482AllrightsreservedINFORMATIONTOALLUSERSThequalityofthisreproductionisdependentuponthequalityofthecopysubmitted.Intheunlikelyeventthattheauthordidnotsendacompletemanus

3、criptandtherearemissingpages,thesewillbenoted.Also,ifmaterialhadtoberemoved,anotewillindicatethedeletion.ProQuest3741482PublishedbyProQuestLLC(2015).CopyrightoftheDissertationisheldbytheAuthor.Allrightsreserved.Thisworkisprotectedagainstunauthorizedcopyingunder

4、Title17,UnitedStatesCodeMicroformEdition©ProQuestLLC.ProQuestLLC.789EastEisenhowerParkwayP.O.Box1346AnnArbor,MI48106-1346iiABSTRACTLaminarburningspeedisathermophysicalpropertyofacombustiblemixture.Itisameasureoftherateofenergyreleasedduringcombustioninquiescent

5、gasmixturesandincorporatestheeffectsofoverallreactionrates,energy(heat)ofcombustionandenergyandmasstransportrates.Thereareseveralexperimentaltechniquestomeasurelaminarburningspeedandtheycanbebroadlycategorizedintotwogeneralcategoriesofstationaryflamesmethodsand

6、thosethatarebasedonpropagatingflames.Investigationofsphericalflamepropagationinconstantvolumevesselsisrecognizedtobeoneofthemostaccurateapproachesforlaminarburningspeedmeasurementandflamestructurestudy.Inthisthesisflamestructure,laminarburningspeedandonsetofaut

7、oignitionarestudiedfordifferentpremixedcombustiblemixturesincludingn-decane,jet-fuels,andHydrofluorocarbon(HFC)refrigerantsinairathightemperaturesandpressuresoverawiderangeoffuel-airequivalenceratios.Theexperimentalfacilitiesconsistoftwosphericalandcylindricalv

8、essels.ThesphericalvesselisusedtocollectpressuredatatomeasuretheburningspeedandcylindricalvesselisusedtotakepicturesofflamepropagationwithahighspeedCMOScameralocatedinashado