电站四角切圆煤粉锅炉冷态流场的数值试验CAT研究

(CAT)(310027)[],QUICKE,,[],,,[1],,,,,;,;1,k-,:5(p…ujŠ)5xj=55xj(5Š5xj)+S(1)U,V,W,P,K,,S[2][3],:App=AEE+AWW+ANN+ASS+Att+ABB+S(2)S=ScREST-SpRESTp(3),ScREST,SpRESTP(:E:,W:,S:,N:,t:,b:):FE-FW+FN-FS+Ft-Fb=0(4),,:APp=AEE+AWW+ANN+ASS+Att+ABB+S+max[(FE-FW+FN-FS+Ft-Fb),0]OLD-max[(FE-FW+FN-FS+Ft-Fb),0](5)SC=+max[(FE-FW+FN-FS+Ft-Fb),0]OLD+SCREST(6)Sp=-max[(FE-FW+FN-FS+Ft-Fb),0]+SpREST(7)9119981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,pn+1-pnt=-…g-1s(Pi+1-Pi)+(uG-pn)(8)^xn+1p=xn+n+1t(9)(FSRT)[4]2211QUICKE,,2535,40,[5],,QUICKE[6]1QUICKE2QUICKEQUICKE,,,,QUICKE1QUICKE2QUICKE()212,0219981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.212.1P,(=/),(=/)[7]PX():5(uufx)5x+5(vufy)5y+5(Wufz)5z=-fv5P5x+55x(fxu5u5x)+55y(fyu5u5y)+55z(fzu5u5z)+55x[eff5(ufx)5x]+55y[eff5(vfy)5y]+55z[eff5(wfz)5z](10)fv;fx,fy,fz,21212,,3,,,,3CAT,:CE600MW115(1304mm1096mm,15):,,[89]3::=dsj/dj(11)dj;dsj:dsj/D,D()H/B=uvr2drRu2rdr=uvr2Ruvr(12)R;r;u,vx,y4567,,,;,1219981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.;,,4()568:20,27;782219981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.;20,,27:,,(9)91011101112131011(20m120m),30(),1011,;,,60m100m,,,,,100m1210()131215,13,,,3219981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,4QUICKE,,,,1,1(CAT)111992(1)211,19963114,115S.V.Partankar.1,19846Pollard,andSiu,A.L.W.TheCalculationofSomeLaminarFlowUsingVariousDis2cretisatiousSchemes,Comp.Meth.Appl.Meth.Eng,vol.35,1982.pp.293-3137W.T.Sha,C.I.Yang,T.T.Kao,S.M.Cho.MultidimensionalNumericalModel2ingofHeatExchagers.JournalofHeatTransferTransactionsofASMEvol.104.1982(august)811,1996911,1996,,1971519937,:,350MW,,3,,,,,,,,1400t700t,45,,,,,()4219981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.THERMALPOWERGENERATIONNo.1January1998ContentsAPPLICATIONANDOPERATIONOFLOWNOxBURNERSINCHINESEUTILITYBOILERSBiYusen(2)ThispaperbrieflydescribesthestructuralfeaturesofvarioustypesoflowNOxburners,whichhavefoundapplicationinChineseutilityboilers.Onthebasisofmeasurement,theoperationbehaviorsofthoseburnersaregivenregardingNOxemission,thermalefficiencyandcombustionstabilityatlowloadoperation.STUDYANDOPTIMIZATIONOFVENTURIUSEDFORLARGEAIRFLOWMEA2SUREMENTINPOWERPLANT.CaiJiyonetal(10)AnanalysiswasmadeonthekeyparametersaffectingtheVenturiperformance,suchas-contractionrate,1-contrationangle,2-expansionangle.Basedondesignoptimizationandsomecoldmodelexperiments,optimumstructureparametersforthedoubleonesandtherelationshipbetweenflowrate(velocity)andpressuredifferencewereobtained.STUDYONCOMPUTERAIDEDTEST(CAT)OFCOLDAERODYNAMICFIELDOFTANGENTIALCOALFIREDBOILERFURNACESunPingetal(17)Someprogresseshavebeenmadeinthenumericalsimulationofaerodynamicsfortangentialfiredboilerfurnace.AQUICKEschemeisintroducedtoavoidfalsediffusion.Atthesametime,thecombinatedconceptofmulti-voidageanddistributedresistanceisusedtodealwiththesimulationofheatingsurfaceinfurnace.Bycomparisonwithcoldmodeltestresults,thenumericalapproachisidentifiedandthenappliedtoanalysisofabnormaloperation.OPERATIONPERFORMANCEOFBOILERS1AND2INLIGANGPOWERPLANTYangXun(23)Boilers1and2inLiGangPowerPlantarethelargestboilerswithfrontwallfiringsysteminChina.Ascomparedwiththeboilerofotherfiringarrangement,theyhavesomeparticularbehaviors.Basedonthetestofthesetwoboilers,thepapersummarizestheiroperatingperformanceanddefects.STUDYONLASTSTAGESBLADESVIBRATIONBEHAVIOURSOFA200MWTUR2BINEUNITWITHDRYCOOLINGWangZhongboetal(32)Describedinthispaperison-sitemeasurementofthedynamicfrequencyandstressof710mmlonglaststagebladesbyus2ingarediotelemetricdeviceontheoperatingturbine,andtheresultswereanalysedaswell.Thevibrationbehavioursofthemeasuredbladesareofsignificanceforreliableoperationofturbineunits.APPLICATIONANDMODIFICATIONOFINDIRECTDRYCOOLINGSYSTEMWITHSURFACECONDENSERINFOSSIL-FIREDPOWERPLANTS.WangPeizhangetal(36)8619981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.