PHOENICS软件在室内火灾研究中的应用

PHOENICSPHOENICSPHOENICSSNHZ-01PHOENICS1(1)(2)PHOENICSFAC2FAC3zonemodelfieldmodelPHOENICS-jiµµρ−PHOENICSPHOENICS2PHOENICS3.42.1PHOENICSPHOENICSParabolicHyperbolicOrEllipticNumericalIntegrationCodeSeriesParabolicHyperbolicEllipticPHOENICS2.2PHOENICSPHOENICSQ1SATELLLITEEARTH,GOUNDEARTHPHOENICS3PHOENICSPHOENICS3.1,0.60m0.43m0.36m0.225m0.05m~0.2850.015m0.01m20.032m20.020mBX3200H0.01g1Table1Liningmaterialsoffireboxandtheirthermalproperties(m)(W/m.K)(Kg/m3)(J/Kg.K)10.0180.04945387920.010.21282112030.010.17674888440.010.34130092150.0150.141400837PHOENICS1Fig.1BackgrounddiagramofsimulationmaxefTmaxvmmaxvvmm=2Fig.2SchematicdiagramofsteadysimulatingpointPHOENICS3.23.2.13.2.1.1SpaldingSCRS:(1)1+S1+SS(2)(3)mfufPHOENICS(gradfdivDtDfeΓ=ρ)1f3Fig.3Relationshipbetweenmixturefractionandmassfractionsofvariouscomponents:pfuCHmfuhT×−=2:TCWpgasmix××=ρ3WPHOENICSprodoxfumixWmprodWmoxWmfuW++=143.2.1.2SCRS:4Fig.4Schematicdiagramoffiresource(−−nOHC284))(−−nOHC284+5nO2+24nN24nCO2+4nH20+24nN2+Q284OHC+5O2+24N24CO2+4H20+24N2+QaC2H4O22:1PHOENICS2C2H4+O2+5O2+24N24CO2+4H20+24N2+Q’bQ=Q’,ab5Fig.5Schematicdiagramofequivalentfiresource1.8107J/g%/108.1284847OHCHC×=2.83107J/g2928.75CH2,PHOENICS141460J/kg.k6Fig.6Schematicdiagramofopenfiresource3.2.2KE-EPKE-EP-:PHOENICS∑=∂∂0iiXU(5)()∑∑⎥⎥⎦⎤⎢⎢⎣⎡−⎟⎟⎠⎞⎜⎜⎝⎛∂∂+∂∂∂∂++∂∂−=∂∂+∂∂jjjiijjiLjiijjiiuuXUXUXBXPXUUtUνρρρ(6)()ShuXHHXHUtHijLLjjj+⎥⎥⎦⎤⎢⎢⎣⎡−∂∂=∂∂+∂∂∑)(Prνρρρ(7)32ijijjiTjiKEXUXUuuδρµρ×−⎟⎟⎠⎞⎜⎜⎝⎛∂∂+∂∂=−8iTTiXHHhu∂∂=−)(Prµρ(9))(PrHT,TKE:lKECT21ρµ=10ClENUTρµTENUT=11KElPHOENICSEPKE-EPKE-EP)()(EPPXiKEKEPRTENUTKEUXtKEbkii−Γ+=⎥⎦⎤⎢⎣⎡∂∂−∂∂+∂∂ρρρ12)()(23EPCCPCKEEPXiEPEPPRTENUTEPUXtEPebekleii−Γ+=⎥⎦⎤⎢⎣⎡∂∂−∂∂+∂∂ρρρ13EPKECCENUTd2µ=14EPKECld23=15C=0.5478;Cd=0.1643;PRT(KE)=1.0;PRT(EP)=1.314;C1e=1.44,C2e=1.92C3e=1.0.3.2.3IMMERSOLPHOENICSIMMERSOL1996PHOENICS3.2.3.1PHOENICSa=0.8s=0.23.2.3.2IMMERSOLT3WGAPT3T3TT3T3IT3()qdotgradTdivdtdTs=⋅−⋅33λ16sqotPHOENICSIIT3)3()(3)1(3316443TTsagradTWGAPsaTdivσσσ−⋅+=⎟⎟⎟⎟⎠⎞⎜⎜⎜⎜⎝⎛⋅++17WGAPLTLS(localturbulencelength-scale)LTLS:(1=gradLTLSdiv)18LTLS=0WGAPWDIS2WDISWGAPWDISLTLS−⋅=19WIDSWGAPgradLTLS−=220)3(44TTCSrad−=σ21C3.2.4PHOENICSPHOENICS∑+Φ=ΦciippSaa22iaΦPHOENICSSIMPLESTSIMPLEshortenedSIMPLEsemi-implicitmethodforpressure-linkedequations,4PHOENICS7PHOENICSFig.7Schematicdiagramofdistributionofgasdensity8Fig.8Schematicdiagramofdistributionofgastemperature8Fig.8VectorgraphofgasflowingPHOENICS1.0m/s9Fig.8Caseofwindfromfront9PHOENICSFig.8CaseofwindfromflankmaxefT2Table2Experimentalconditionsandtestedandcalculatedresultsm(m2)maxvm•(g/s)maxefT(K)maxefT(K)0.2850.0232.2495110100.150.0161.057959925.50.150.0321.4559479620.090.0160.89294189010.050.0230.671892862.550.150.0321.055893872.0520.090.0320.773825814.650.150.0231.293940962.50.050.0160.446812815.1530.2850.0231.6179489960.090.0320.846821869.7540.090.0230.88298930.2850.0321.075858834.950.090.0320.841811903.5PHOENICS5KE-EP6PHOENICSPHOENICSPHOENICSPHOENICS()[1]..:,1997.[2]..:,1984.[3],..:,1992.[4],,,..:,1986.PHOENICS[5],,,..:,1995.[6],..316[7]BrianSpaldingSimultaneousPredictionofSolidstress,HeattransferandFluidflowbyaSingleAlgorithmLecturepresentedatXIIISchool-SeminarofYoungScientistsandSpecialistsundertheleadershipoftheAcademician,ProfessorA.I.LeontievMay20-25,2001,SaintPetersburg,RussiaApplicationofPHOENICSSoftwaretoStudyofEnclosureFiresAbstract:Inthispaper,thebasicideasofcomputersimulationtoenclosurefireswereexpounded;thesteady-statefieldsimulationtothetestedresultsofSNHZ-01fireexperimentalsystembyPHOENICSsoftwarewasconducted,andthecomparisonbetweenthecomputersimulatingresultsandexperimentallytestedoneswasmade;theimprovementofthecomputermodelsmentionedinthispaperwasputforward.KeyWords:PHOENICSsoftware,fieldsimulation,enclosurefires,PHOENICSfiretemperature