FLUENT软件在圆柱绕流模拟中的应用

271Vol.27No.120052WATERCONSERVANCY&ELECTRICPOWERMACHINERYFeb.2005FLUENTApplicationofFLUENTsoftwareinthesimulationofflowaroundacylinder1,2,1,1XUYuan2li1,XUYuan2chun2,LIANGXing1,ZHANGJin2guo1(1.,430072;2.,474780)(1.SchoolofPowerandMechanicalEngineeringofWuhanUniversity,Wuhan430072,China;2.JiangheOreYardofthe1stPetroleumProductionFactoryoftheHenanOilField,Nangyang474780,China):FLUENT,,20,40,100,:,40,40,,,,FLUENT:;FLUENT;:TP311.56:TB126:A:1006-6446(2005)01-0039-03Abstract:UniformflowaroundamountingcylinderissimulatedwiththeapplicationofFLUENTsoftwarewhileReynoldsnumberis20,40,100.Streamfunctionandvelocityvectordistributionsareindicated.TheresultsshowthataseriesofconstructionappearsasReynoldsnumberincreases.WhenReisaround40,flowpatternchanges:thereisapairofmount2ingvortexwithRelessthan40;onthecontraryitbecomesunsteadyandvortexexpand,slough,generateagainuntiltworowsofperiodicswingandoverlapvortexform.Comparedwithexperimentalresults,itisconfirmedthatFLUENTcanwellpredictflowstructure.Keywords:flowaroundacircularcylinder;FLUENTsoftware;reynoldsnumber:2004-07-30:(1980-),,,,1,,,,,,,,,,,,,,Karman,,,White[1]2:,;,,,Kovasznay,Roshko40,4020052(Re),Re5,,5Re40,;40Re150,,,,,,KarmanRe150,,150Re300,300Re3105,,,,3105Re3106,,,,,,Re3106,,,,,Re,,,,,(LES)(DNS),,,N2S,,FLUENT,Re=20,40,100,,,2,,N2S,9uj/9xj=0,(1)9ui9t+99xj(ujui)=-19P9xi+99xj9ui9xj(2)FLUENT,SMPLEC3ª2.0m,1.0m/s,121,(20,40,100),Re=UD/,100,Strouhal0.165,S=D/U:U=1.0m/s,,11Re2040100/(kg/m3)111/(Pa2s)0.10.050.0222Re=20Re=403456,3(Re=20)271,:FLUENT414(Re=20)5(Re=40)6(Re=40)Re=100787(Re=100)8(Re=100)4(1):,Re40,Re40,,,,FLUENT(2)FLUENT,(3)100,:[1]FrankM.White.ViscousFluidFlow[M].McGraw2HillInc,1974.[2].[J].,1994,24(4):525544.[3],.[J].,1999,31(1):100105.[4],.[J].,1995,17(4):2530.[5],.[J].,1997,18(2):169172.[6],,.[J].,2002,12(9):964969.[7].[J].,1995,1(3):259268.(:)