Experimentalstudyonpremixedflammablegasexplosionventing

inlinkedvesselsunderthesameeffictiveventarea

YOU Ming-wei; JIANG Jun-cheng; YU Yuan; WANG Zhi-rong

doi:10.11883/1001-1455(2012)02-0221-04

Volume 32 Issue 2

May 2014

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Article Navigation > Explosion And Shock Waves > 2012 > 32(2): 221-224

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Citation:

YOU Ming-wei, JIANG Jun-cheng, YU Yuan, WANG Zhi-rong. Experimentalstudyonpremixedflammablegasexplosionventing inlinkedvesselsunderthesameeffictiveventarea[J]. Explosion And Shock Waves, 2012, 32(2): 221-224. doi: 10.11883/1001-1455(2012)02-0221-04

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Experimentalstudyonpremixedflammablegasexplosionventing inlinkedvesselsunderthesameeffictiveventarea

doi: 10.11883/1001-1455(2012)02-0221-04

1.
SchoolofUrbanConstructionandSafetyEngineering,
2.
NanjingUniversityofTechnology,Nanjing 210009,Jiangsu,China;

Funds:

NationalNaturalScienceFoundationofChina(20976081,50904037)

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Corresponding author: JIANG Jun-cheng
Publish Date: 2012-03-25

Abstract

Abstract

Explosionventingwascarriedoutinbothlinkedandsinglevesselsunderthesamedimensionlesseffectiveventareaconditionstostudyflamepropa ationandexplosionpressureevolution.It isshownthatthemaximumreducedexplosionpressureandthemaximumpressureriserateinthe linkedvesselsexceedthoseinthesinglevessels,especially,thedifferenceofthemaximumpressure riseratesismuchgreaterbetweenthelinkedvesselsandthesinglevessels.Atthesamedimensionless effectiveventarea,themaximumreducedexplosionpressureinthereceivingvesselofthelinkedvessels, ishigherthanthatinthereleasingvessel.Whenthereceivingvesselissmallerthanthereleasing vessel,themaximumreducedexplosionpressureinthereceivingvesselismuchhigher.Withtheincreaseofthepipelength, themaximumreducedexplosionpressureinthereceivingvesselincreases, andthemaximumreducedexplosionpressureinthereleasingvesselchangesunconspicuously.During theexplosionventinginthelinkedvessels,theflamepropagatesaccelerativelyinthepipe.Andatthe samepipelengths,theflamepropagationspeedfromasmallvesseltoabigvesselishigherthanthat fromabigvesseltoasmallvessel.
- mechanicsofexplosion,
- gasexplosionventing,
- flamepropagationspeed,
- linkedvessels