Secondarythermalignitionofgasoline-airmixtureinducedbyhotsource

OU Yi-hong; DU Yang; JIANG Xing-sheng; WANG Dong

doi:10.11883/1001-1455(2011)05-0510-06

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OU Yi-hong, DU Yang, JIANG Xing-sheng, WANG Dong. Secondarythermalignitionofgasoline-airmixtureinducedbyhotsource[J]. Explosion And Shock Waves, 2011, 31(5): 510-515. doi: 10.11883/1001-1455(2011)05-0510-06

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OU Yi-hong, DU Yang, JIANG Xing-sheng, WANG Dong. Secondarythermalignitionofgasoline-airmixtureinducedbyhotsource[J]. Explosion And Shock Waves, 2011, 31(5): 510-515. doi: 10.11883/1001-1455(2011)05-0510-06

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Secondarythermalignitionofgasoline-airmixtureinducedbyhotsource

doi: 10.11883/1001-1455(2011)05-0510-06

1.
ChongqingKeyLaboratoryofFireandExplosionSafetyProtection,

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Corresponding author: OU Yi-hong
Publish Date: 2011-09-25

Abstract

Abstract

Anexperimentonthegasoline-airmixturesecondarythermalignitionwasoperatedunder theconditionsthattheresidualgasformedafterthefirstthermalignitionextinguishedencountered thelocalhotsourceagain.Accordingtoexperimentalresults,thecriticalignitiontemperature,the criticalconcentration,thechangerulesoftheignitionprobability,theignitionintensityandignition mannerswerediscussedindetail.Comparedwiththefirstthermalignition,thesecondarythermalignitionofthegasoline- airmixtureiseasier,theignitionintensityisstronger,andthetimeoffireis longer.Thegeneralcriterionofthesecondarythermalignitionofgasoline-airmixturewassummarized. Therelationbetweentheambienttemperatureandtheignitionprobabilitycanbeexpressedby theequation =aeb cT+d .
- mechanicsofexplosion,
- secondarythermalignition,
- hotsource,
- gasoline-airmixture