掘进巷道风流热环境的数值模拟

312Vol.31No.220064JOURNALOFCHINACOALSOCIETYApr12006:0253-9993(2006)02-0201-05,(,454000):k-.,,,,,.,,,.:;;;;;:TD727:A:2005-12-19:(0311051900);(2004KYCX005);;(B0204):(1963-),,,,.Tel:[phone],E-mail:gao@hpu1edu1cnNumericalsimulationofthethermalenvironmentatworkingfaceofdivingairwayGAOJian2liang,WEIPing2ru(SchoolofSafetyScienceandEngineering,HenanPolytechnicUniversity,Jiaozuo454000,China)Abstract:The32dimensionalk-turbulentflowmodelwasusedtosimulateheat2andmass2transferinaheadingfacewithforcingauxiliaryventilationsystem.Thedistributionsofairtemperatureissimilartothatofmoisturecon2tentinthelocallyventilatedworkingface,andthevariationsinsensibleheatandlatentheatfromthesurfaceoftheroadwayintotheworkingfacewithtimeandwetnessfactorswereanalyzed,withtheincreaseofwetnessfactor,la2tentheatfluxincreases,sensibleheatfluxdecreases,andthetotalheatfluxincreases.Thetemperaturedistribu2tioninthestratarockanditsvariationwiththeelapsedtimeatdifferentwetnessfactorswerediscussed,Thenon2uniformdistributionofheattransfercoefficientonrocksurfacehasalargeeffectontherocktemperaturedistributionnearairwaysurface.Asthelocationgoesdeeperintothesurroundingstratafromtheroadwaysurface,theuneverdistributioneffectofrocktemperaturediminishesandapproachesanevendistributiongradually.Keywords:divingairway;airflow;heat2transfer;mass2transfer;sensibleheat;latentheat.,[17].,,.[8,9],.200631,..,.,.,,,.,,.k-,,.1,Reynolds.Reynoldsk-,k-.Reynoldsk-:pu,vwNavier-Stocksk,TD8.8..,9()9t+div(u)=div(grad)+S,,;S;S..,,aPP=aEE+aWW+aNN+aSS+aTT+aBB+b,,a,b;P,E,W,N,S,TB.Simple,,TdmaGauss-Seidel,.21Fig11Demonstrationforheattransfercalculation211W(1),PS,.,Qsen=CpaWTW-TPyP/2A,(1),Qsen;;Cpa;WW;TWW;TPP;A.(1),Qsen=W(TW-TP)A,(2)2022:,WW,W=WCpa/(yP/2).212(),WPml=(mW-mP),ml,;W,=W/Cpa(Sc/Pr)2/3;mWW;mPP.,,TW.,mW,mW=b0+b1TW,b0b1.,,f.f.ml=f(mW-mP).AQl=fLv(mW-mP)A,(3),Lv.213,TW,.,TW,TW.S,QtQt=TS-TWyS/2A,,;TSS.P,Qt=Qsen+Ql.WQsen+Ql=TS-TWyS/2A.(4)(2)Qsen(3)Ql(4),TWTSTP,.2Fig12Thesimulatedroadway3311,.,410m.017m(2),10m.1510m/s,25,()10g/kg.50,f=015.,5025.:,.6m3022006313.3Fig13Distributionofairtemperatureandhumidity,.,,(3(a),(c))..(),(3(b),(d)).,.31250,,()2510g/kg,(X=0X=10m)4...,(X=0)..(X=0).4Fig14Variationofsensibleheatandlatentheatfromworkingface5Fig15Rocktemperaturedistributionanditsvariation4,,.,,.,.313(Y=0,Z=210m)5.,,.,.f=011,5d,X=54022:6Fig16Rocktemperaturedistributionm6.,515m..,.,,.,,.4,Simple.,,..,,.:[1]StarfieldAM,BlelochAL.Anewmethodforthecomputationofheatandmoisturetransferinpartlywetairway[J].J.S.Afr.Inst.Min.Met.,1983,83(11):263269.[2]UchinoK,InoueM.NewpracticalmethodforcalculationofairtemperatureandhumidityalongwetroadwayTheinfluenceofmoistureontheundergroundenvironmentinmines(2ndReport)[J].JournaloftheMiningandMetallurgicalInstituteofJapan,1986,102(6):353357.[3]UchinoK,InoueM.Improvedpracticalmethodforcalculationofairtemperatureandhumidityalongaroadwayundercompli2catedconditionsTheinfluenceofmoistureontheundergroundenvironmentinmines(3rdReport)[J].JournaloftheMiningandMaterialsProcessingInstituteofJapan,1990,106(1):712.[4]SasakiK,MiyakoshiH,MashibaK,etal.Analyticalsystemforventilationsimulatorswithskylinenodalpressuremethodandpracticalestimatesystemforundergroundmineair-conditioning[A].26thProceedingsoftheApplicationofComputersandOperationsResearchintheMineralIndustry[C].Pennsylvania:TheSocietyofMining,MetallurgyandExplosionInc.,1996.393399.[5],.[J].,1984,15(6):110.[6],.[J].,1997,19(3):123127.[7],,,.[J].,2002,27(1):5963.[8],,,.[J].,2002,12(2):1923.[9],,,.[J].,2002,12(6):3336.502