燃烧器配风对W型火焰锅炉炉内空气动力场影响的实验研究

191Vol.19No.120023CHINESEJOURNALOFAPPLIEDMECHANICSMar.2002:100024939(2001)01200018205WX111222(710038)1(710049)2:Stein360MWW,,(),,W:W;;;:TK223123:A1W,,NOx[1]80W,,,,W,,,,,,,Stein360MWW,,W2Stein360MWW:1),3638,,,,,11;2)()6,()Stein360MWW,,W,,1:20,X:([1998]6):2000206213:2001204228:,,1959,,;:,1©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(ReRe),,[2],,()60,12.4%(…Fh=0.876),TSI1050A,10m,+,(:IMP3539IC,QB,1KHZ,16A/D),1,,,284,()2,31231(m/s)M1:M2:M3:M5:M4171676428101540001:18193:0:0:027167642810154151365630196824166911:18193:0121:3165:11373716764311542019935197321981:231987:0139:4192:21443(1),3,,(2)3111)911,:W©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,ŠWzx(),[3]:ŠWZS=(F1W21+F2W22)/(F1+F2)(1):F1,W1,F2,W22),[3]:=6ni=1Fi/F0(2),Fi,F0(),n,Wz/ŠWzs0.3,Wz/ŠWzs0.33)[3]:Myx=F0ŠW2z(3),F0(),ŠWz,,,,Mgh,L,H01/4312481)3,,,,,,,,,,,W;,,,,,,,,,,,;,(),,,,,,4Y5,2)(5),(),,,0219©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.678,,,,,,,,,,,4(Y)3)(6),,,,,,,,,,,[4],,(4)(7),,,,,,,,,,5)(8),,,,,,,,,313:1),,,3%;2),,2%;3),R=T1/T2[1+0.033(T1-T2)],1%;4),3%51)W,(),,,,121,:W©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.W,,(),,,,,2),,,,,,,1,,,,:,1990:3073102,,:,1987:25303,,,W,,1994,14(1):27324,,,:,1980:65-71,,,,200216K,,,,,2002,1,,,2219©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.gorithmlocatessystemparameterranges,wherequasi2periodicandchaoticresponsesbifurcatefromtheperiodicresponse.Thenumericalschemeisusedtostudythedynamicbehaviorofacrack2rotorsystem,whichhasnonlinearstiffnesscharac2teristics.Crack2depthisusedasthebifurcationparameter,thebifurcationdiagramsofthesystemstableresponseisshown.Keyword:mapping&continuationcomprehensivemethod,crack2rotor,bifurcation,chaos.SensitivityAnalysisforReliabilityConstraintsofStructuresChenJianjunMaHongboDaiJunCuiMingtao(DepartmentofElectronicMechanicalEngineering,XidianUniversity,Xian,710071)Abstract:Theoptimumdesignmathematicalmodelofengineeringstructuresbasedonreliabilityisconstructed.Therelia2bilityconstraintsofstructuraldisplacementandstressareequivalencetreatedbymeansofthetheoryofsecondordermo2mentinstructuralreliability,andthenthesensitivityexpressionsofreliabilityindexfunctionofdisplacementandstressarederived.Thoseexpressionsarelaconicandnormative,andhaveuniversality,whichareapplicabletosolvethesimilari2tysensitivityanalysisproblem.Theexampleshowsthatthecomputationalex2pressionsofstructuralsensitivitypresentedinthepaperarerationalandefficient.Keywords:Structuraloptimization,Reliabilityconstraints,Displacement,Stress,Sensitivityanalysis.ExperimentalInvestigationsonInfluenceofMatchofAirFlowfromSpoutsofBurnersonAerodynamicalFieldinWShapedFlameBoilerHeLimingZhangJianbangLiXiaoyong(EngineeringCollegeofAirForceEngineeringUniversity,Xian,710038)CheGangXuTongmoHuiShien(XianJiaotongUniversity,Xian,710049)Abstract:Coolstateexperimentalinvestigationhasbeenmadeinamodelofthe360MWWshapedflameboilerintro2ducedbyLuohuangPowerStationfromSteinCorporationinFrance.Measuringflowfieldintheboilerwithahot-wireanemometer,andstudiesofregularityontheinfluenceofmomentumflowrateofairflowfromvari2ousspoutsofburnersonaerodynamicalfieldinboileraremadeinthepaper.Meanwhile,analysisandcompari2sontoexperimentalresultsarealsocarriedout.Itismanifestedthatsuitablematchofrateofairflowsfromvari2ousspoutsofburnersfortheorganizationofcombustionconditionsinWshapedflameboilerisveryimportant.Keywords:Wshapedflameboiler,momentumflowrate,modeledinvestigation,aerodynamicalfield.CHINESEJOURNALOFAPPLIEDMECHANICSVol.19©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.