Anexperimentalstudyofdetonationparametersofliquidfueldropscloud

SHEN Xiao-bo; LU Chang-bo; LI Bin; XIE Li-feng

doi:10.11883/1001-1455(2012)01-0108-05

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SHEN Xiao-bo, LU Chang-bo, LI Bin, XIE Li-feng. Anexperimentalstudyofdetonationparametersofliquidfueldropscloud[J]. Explosion And Shock Waves, 2012, 32(1): 108-112. doi: 10.11883/1001-1455(2012)01-0108-05

Citation:

SHEN Xiao-bo, LU Chang-bo, LI Bin, XIE Li-feng. Anexperimentalstudyofdetonationparametersofliquidfueldropscloud[J]. Explosion And Shock Waves, 2012, 32(1): 108-112. doi: 10.11883/1001-1455(2012)01-0108-05

Citation:

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Anexperimentalstudyofdetonationparametersofliquidfueldropscloud

doi: 10.11883/1001-1455(2012)01-0108-05

1.
StateKeyLaboratoryofFireScience,UniversityofScienceandTechnologyofChina,
2.
Hefei230026,Anhui,China;
3.
SchoolofChemicalEngineering,NanjingUniversityofScienceandTechnology,

Funds:

NationalNaturalScienceFoundationofChina(10676120)

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Corresponding author: XIE Li-feng
Publish Date: 2012-01-25

Abstract

Abstract

Inordertounderstandthe mechanism ofliquidfuelclouddetonation,theup-and-down methodandsoottracetechniquewereusedtostudytherelationshipbetweentheclouddetonationparameters( velocity,pressure,criticalinitiationenergyandcellwidth)andequivalenceratioexperimentallywithaverticalshocktube. Resultsindicatedthatthedetonationpressureanddetonationvelocityofpropyleneoxide( PO)increasedandthendecreasedsmoothlywiththerisingofequivalence ratio.Thecriticalinitiationenergythatdirectlyinitiatedthedetonationofhydrocarbonliquidfuel cloudshowedaU-shapedcurverelationwiththevariationofequivalenceratios.Theoptimumconcentrationwasfoundonthesidewheretheequivalenceratioisover1. Thecriticalinitiationenergywas alsofoundcloselyrelatedtomolecularstructureandvolatilityoffuels.IPNandPOhadsimilarcriticalvaluesandthoseofalkaneswerealllarger. DetonationcellsizesofPOatboth25 ℃ and50 ℃ showedaU-shapedcurve.Theminimalcellwidthalsoliedonthesideofrich-fuel(1).ThedetonationreactionofPOatnormaltemperatureiscontrolledbygas- phasereaction.
- mechanicsofexplosion,
- clouddetonationparameter,
- up-and-downmethod,
- liquidfuel,
- soottracetechnique