切圆锅炉炉内冷态模化理论研究

21520015ProceedingsoftheCSEEVol.21No.5May2001n2001Chin.Soc.forElec.Eng.:025828013(2001)0520047204,(,200090)STUDIESONCOLDMODELINGTHEORYOFFURNACEINTANGENTIALFIRINGSYSTEMZHUZhen2jin,ZHANGChang2Lu(ShanghaiUniversityofElectricPower,Shanghai200090,China)ABSTRACT:Inordertogetacoldmodelingtheory,whichcanreappearairflowmovementinfurnacebymodeltests,thispaperproceedsfromcontinuityequationandmomentumdifferentiale2quations.Relevantsimilaritycriteriaareobtainedbysimilaritytransformmethod.Then,bythedeterminationofratiobe2tweenairflowrotatingmomentuminfurnaceandairjetmomen2tuminburnernozzleasreferencedimensionlessnumber,thenumericrelationbetweensimulatedairflowvelocitiesandmodelscaleareachieved.Finally,limitmodelscaleandsimulatedair2flowvelocitiesofprimaryairandsecondaryairatacertainmod2elscaleareallpresented.KEYWORDS:limitmodelscale;simulatedairflowvelocity;coldmodelingtheory:,,,;,;,,:;;:TK221:A1:(2000K02),;,,,,,,,,,,,,,,3:;;,[1];[2]©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.;,,::?:1?,,,,,,,2[3],,,,,2.1,XYZNavier2Stokeso,m():C=om;Cv=UoUm=VoVm=WoWm;CP=PoPm;Cl=XoXm=YoYm=Z0Zm;C=0m;Cg=gX0gXm=gY0gYm=gz0gZm,5Uo5Xo+5Vo5Yo+5Wo5Zo=0;XUo5Uo5Xo+Vo5Vo5Yo+Wo5Wo5Zo=gXo-1o5Po5Xo+oo(52Uo5X2o+52Uo5Y2o+52Uo5Z2o),Navier2StokesC2vCl=Cg=CpCCl=CCvCC2l=idemCvCl=idemFr=glU2=idem,Re=Ul=idem,Eu=PU2=idem,CvCl=idem2.2Fr,FrRe,,Eu,Re,ReRe,,(ReRe)Eu=f(Re,Fr),,,-(Cv/Cl),2.3(1),(2):1)[3],8421©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,,,,,2),,3)(),,,,,:;;-Cv/Cl=;3:AA;(HB)dj;RWR;MR,V=4WRHB/A2;2;ToTyBoBy[4];SitiiToTyBoBy;Dsjtd;iJi[4],(L)MLWL(R)MRWRMLWLMRWR=(64i=16Jij=1H-[V(ti+jtd)-(Si+jDsj)tan]H+2(Si+jDsj)tan)22BA42Cv/Cl:2Cv/Cl:(1)()Sl,,H/SlB/SlA/Sl(2),,iSi,DsjSl(3),,22730[57](4),iti1td945:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.Ji(5),MLoWLoMRoWRo=MLmWLmMRmWRm64i=16Jioj=1Ho-[Vo(tio+jtdo)-(Sio+jDsjo)tan]Ho+2(Sio+jDsjo)tan22BoAo=64i=16Jimj=1Hm-[Vm(tim+jtdm)-(Sim+jDsjm)tan]Hm+2(Sim+jDsjm)tan22BmAm(6)2Cv/Cl=15(1),(1)(2)1mW21m2mW22m=(1+K)1oW21o2oW22o,W1mW2m=W1oW2o1o2o(1+K),K,(2)2Cv/Cl=1,,W2m=W2o/Sl,W1m=W1oSl1o2o(1+K)6ReRe(Re1Re2),Rem2Re2Sl2Re2oRe22o2m,,Rem1Re1Sl1Re1oRe11o1m1o2o(1+K),Sl=min(Sl1,Sl2)7(1)3:,(2),(3),2Cv/Cl=1(4)Sl=min(Sl1,Sl2),:W1m=W1oSl1o2o(1+K);W2m=W2o/Sl2:[1](CenKefa).(Re2searchmethodandmeasurementtechniqueforboilercombustionadjustmenttests)[M].:(Beijing:HydraulicandElectricPowerPress),1987:25230.[2](YangSheng).(Dis2cussionaboutcoldmodeltestconditionsofutilityboiler)[R].(TechnicalInterchange),(WuhanBoilerWorks),1979:12222.[3](LiZhiguang).(Similarityandmodeling)[M].:(Beijing:NationalDefenseIndustryPress),1982.12.[4],(ZhuZhenjin,etal).(Researchonrotatingcharacteristicsofisothermalairflowintangentiallyfiredutilityboilers)[J].(PowerEngineering),2000,20(6):9272932.[5],(ShandongEngineeringCollege,etal).(Fluidmechanicswithengineeringapplication)[M].:(Bejing:HydraulicandElectricPowerPress),1979:243.[6],,(OuyangChuping,etal).(Similarityandammunitionmodeling)[M].:(Beijing:WeaponryIndustryPress),1995:1352152.[7],(XuJinyuan,XuTongmo).(Combustion)[M].:(Beijing:MechanicalIndustryPress),1989:2342258.:2000209225;:2001201221:(19682),,,,()0521©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.