Criticalenergyfordirectinitiationofsphericaldetonations

inC2H2-O2-ArandC2H2-N2O-Armixtures

ZHANGBo; BAIChun-hua

doi:10.11883/1001-1455(2012)06-0592-07

Volume 32 Issue 6

Apr. 2014

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ZHANGBo, BAIChun-hua. CriticalenergyfordirectinitiationofsphericaldetonationsinC2H2-O2-ArandC2H2-N2O-Armixtures[J]. Explosion And Shock Waves, 2012, 32(6): 592-598. doi: 10.11883/1001-1455(2012)06-0592-07

Citation:

ZHANGBo, BAIChun-hua. Criticalenergyfordirectinitiationofsphericaldetonations inC2H2-O2-ArandC2H2-N2O-Armixtures[J]. Explosion And Shock Waves, 2012, 32(6): 592-598. doi: 10.11883/1001-1455(2012)06-0592-07

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Criticalenergyfordirectinitiationofsphericaldetonations inC2H2-O2-ArandC2H2-N2O-Armixtures

doi: 10.11883/1001-1455(2012)06-0592-07

1.
SchoolofResourcesandEnvironmentalEngineering,
2.
EastChinaUniversityofScienceandTechnology,Shanghai200237,China;

Publish Date: 2012-11-25

Abstract

Abstract

Directinitiationwasachievedviaahigh-voltagecapacitorsparkdischargeandthecriticalenergywasaccuratelyestimatedfromtheanalysisofthecurrentoutput. Experimentswerecarriedout tomeasurethecriticalenergiesofC2H2-O2-ArandC2H2-N2O-Armixturesunderdifferentinitialconditions. ThecriticalenergiesforC2H2-N2O-ArmixturesaresignificantlyhigherthanthoseforC2H2- O2-Armixturesunderthesameinitialconditions.Therelationbetweenexplosionlengthandcritical tubediameterwasanalyzedtoexplorethelargediscrepancyofthecriticalenergybetweenthosemixtures. ThecriticaltubediametermeasurementinC2H2-N2O-Armixtureswasfurtherinvestigated, andbasedonthecriticaltubediametercorrelation,therelationshipbetweenexplosionlengthandcriticaltubediameterforC2H2- O2-Armixtureswasfoundtober0=2.5dc.Andthecorrespondingrelationshipisr0= 2dcforC2H2-O2-Armixtures.ItdisplaysthattheproportionalfactorbetweenexplosionlengthandcriticaltubediameterwillincreaseifN2Oisusedasanoxidizer, whichresultsinmore initiationenergyperunitrequiredforinitiatingthemixturetoachieveadirectdetonation.Thusthe criticalenergyofdirectinitiationtendstobehigher.
- mechanicsofexplosion,
- criticalinitiationenergy,
- directinitiation,
- C2H2-O2-Ar,
- detonation,
- explosionlength,
- criticaltubediameter