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1、AtmosphericEnvironment45(2011)3913e3923ContentslistsavailableatScienceDirectAtmosphericEnvironmentjournalhomepage:www.elsevier.com/locate/atmosenvCFDmodelsimulationofLPGdispersioninurbanareasabaaccMarcoPontiggia,GabrieleLanducci,ValentinaBusini,MarcoDerudi,MarioAlba,Marc
2、oScaioni,dda,*SarahBonvicini,ValerioCozzani,RenatoRotaaPolitecnicodiMilano,Dip.diChimica,MaterialieIngegneriaChimica“GiulioNatta”,viaMancinelli7,20131Milano,ItalybUniversitàdegliStudidiPisa,Dip.diIngegneriaChimica,ChimicaIndustrialeeScienzadeiMateriali,viaDiotisalvi2,561
3、26Pisa,ItalycPolitecnicodiMilano,Dip.B.E.S.T.,viaM.d’Oggiono18/a,23900Lecco,ItalydAlmaMaterStudiorumeUniversitàdiBologna,Dip.diIngegneriaChimica,MinerariaedelleTecnologieAmbientali,ViaTerracini28,40131Bologna,ItalyarticleinfoabstractArticlehistory:Thereisanincreasingconc
4、ernrelatedtothereleasesofindustrialhazardousmaterials(eithertoxicorReceived24January2011flammable)duetoterroristattacksoraccidentaleventsincongestedindustrialorurbanareas.InReceivedinrevisedformparticular,areliableestimationofthehazardouscloudfootprintasafunctionoftimeisr
5、equiredtoassist14April2011emergencyresponsedecisionandplanningasaprimaryelementofanyDecisionSupportSystem.Accepted24April2011Amongthevarioushazardousmaterials,thehazardduetotheroadandrailtransportationofliquefiedpetroleumgas(LPG)iswellknownsincelargequantitiesofLPGarecomm
6、ercializedandtherailorroadKeywords:transportationpatternsareoftenclosetodowntownareas.Sinceitiswellknownthatthewidely-usedHazardousmaterialtransportationdispersionmodelsdonotaccountfortheeffectsofanyobstaclelikebuildings,tanks,railcars,ortrees,inConsequenceanalysisCFDmod
7、elsthispaperaCFDmodelhasbeenappliedtosimulatethereportedconsequencesofarecentmajorHeavygasdispersionmodelingaccidentinvolvinganLPGrailcarruptureinacongestedurbanarea(Viareggiotown,inItaly),showingLPGboththelargeinfluenceoftheobstaclesonLPGdispersionaswellasthepotentialsof
8、CFDmodelstoViareggioaccidentforeseesuchaninfluence.Ó2011ElsevierLtd.Allrightsreserved.1.Introductionesca
