Kineticcharacteristicsandinfluencingfactorsof

gasexplosioninducedbyshockwave

LIANG Yun-tao; ZENG Wen

doi:10.11883/1001-1455(2010)04-0370-07

Volume 30 Issue 4

May 2014

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LIANG Yun-tao, ZENG Wen. Kineticcharacteristicsandinfluencingfactorsof gasexplosioninducedbyshockwave[J]. Explosion And Shock Waves, 2010, 30(4): 370-376. doi: 10.11883/1001-1455(2010)04-0370-07

Citation:

LIANG Yun-tao, ZENG Wen. Kineticcharacteristicsandinfluencingfactorsof gasexplosioninducedbyshockwave[J]. Explosion And Shock Waves, 2010, 30(4): 370-376. doi: 10.11883/1001-1455(2010)04-0370-07

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Kineticcharacteristicsandinfluencingfactorsof gasexplosioninducedbyshockwave

doi: 10.11883/1001-1455(2010)04-0370-07

1.
StateKeyLaboratoryofCoalMineSafetyTechnology,ShenyangBranchof
2.
ChinaCoalResearchInstitute,Shenyang110016,Liaoning,China;

Funds:

NationalNaturalScienceFoundationofChina(50674055)

tNationalBasicResearchProgramofChina(973Program)(2005CB221506)

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Corresponding author: ZENG Wen
Publish Date: 2010-07-25

Abstract

Abstract

ByamendingtheSHOCKcodeintheFortranchemicalkineticspackage,CHEMKIN Ⅲ,a computationalmodelwasbuiltfortheshockwave-inducedgasexplosioninashocktube.And,the detailedreactionmechanismsinvolving53speciesand325reactionswereadoptedinthemodelabove. Thebuiltcomputationalmodelwasusedtoanalyzetheevolvementsofthefollowingparameters: mixedgastemperature,shockwavevelocity,themolefractionsofreactants(CH4andO2),themole fractionsofactivecenters(O,H),andthemolefractionsofcatastrophicgases(CO,CO2,NOand NO2)intheprocessofgasexplosioninducedbyshockwave.Furthermore,theeffectsoftheinitial pressureandthemixedgascompositionbeforegasexplosiononthekineticcharacteristicsofgasexplosioninducedbyshockwavewerediscussed. TheresultsshowthatthemolefractionsofCO,CO2, NOandNO2areabout0.07,0.02,0.001and10-6,respectively,aftergasexplosion.WiththeincreaseoftheinitialpressureandthedecreaseoftheCH4fractioninthemixedgas, thedetonationtime ofgasexplosionshortens,thetemperaturedecreases,butthepressureincreasesaftergasexplosion. Meanwhile,themolefractionofCOdecreases,themolefractionofNOincreases.
- mechanicsofexplosion,
- influencingfactor,
- chemicalreactionkineticsmodel,
- gasexplosion,
- shockwave

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