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风机降噪研究的现状与分析 综述了近年来有关风机噪声的一些研究状况,包括已取得的成绩和面临的一些问题,对风机噪声的控制方法进行了大致的分类介绍,对新的发展趋势和应进一步深入研究的问题进行了探讨。 风机 噪声控制 综述 1 70,。,,。、()、,,。:,、。,,。,,,。(ActiveNoiseControl),,。,。2 ,。,。,,,、,、、;,,()。(、)(、、),(、、、、)[1]。、、[1],。,。,,[2]。K.R.FehseW.Neise[3],,、。,29Vol.29,No.2,2001 FLUIDMACHINERY :2000—08—21、[4]。。,[5～7]。,[8～11]。,,。,、,。[12]、、[12、13];,、[14];[15]。,、。,,,,。,—。3 (PassiveNoiseCon-trol)。、、、、λ/4、[16],。:,,,———,,[17]。———[18]。:,,,,,,。,,Mt0.90～0.95,Lp130～140dB,,1,。MtLp,,,。,,()。4 :、。80,,“”,。,P.A.Nelson“”[19]。,。,,、[20～22]。4.1 旁通管反声降噪,、。,,。():(),();;。,。,30 2001292,[23、24];[25、26];[27]。,。4.2 结构辐射声的有源控制。80,P.A.Nelson[28],,,,,。,[29];、,,,,[30];,,,,,[31]。。:,,,,。,,。,、。,,。,[32～36],。4.3 风机空气动力噪声的有源控制,,。,。,。。4.4 有源声吸收[37],,,。,,。,λ2/4π(λ)。(100Hz),0.93m2;3。,。4.5 双层板结构有源控制[38],,,。(AAC)(AVAC)。AAC,;AVAC,。。,,。4.6 三维空间有源降噪系统的研制80,[39];90,,、,()。、。CarlH.Gerhold[40]。,。ANC,31Vol.29,No.2,2001 FLUIDMACHINERY ANC,,ANC。ANC,。,ANC、。,。,ANC,。ANC,ANC,。5 ,,。,,,:(1);(2),、;(3)。,。,,。,,,,。1 ..:,19872 ..,1995;(1)、(2)、(4)3 FehseKR,NeiseW.AIAAJournal,1999;37(10)4 ,..,2000;28(3)5 NeiseW.JournalofSoundandVibration,1975;436 NeiseW,BarsikowB.JournalofEngineeringforIn-dustry,1982;1047 MongeauL,ThompsonDE,MclaughlinDK.JournalofSoundandVibration,1993;1638 JeonWH,LeeDJ.The5thInternationalCongressonSoundandVibration,19979 JeonWH,LeeDJ.JournalofSoundandVibration,1999;222(2)10 DunneRC,HoweMS.JournalofSoundandVibra-tion,1997;202(5)11 StanescuDetal.AIAAJournal,1999;37(3)12 HoweMS.J.FluidMech.,1975;7113 MohringM.JournalofSoundandVibration,1990;14014 ,..,1995;20(3)15 SenR.AIAAJournal,1997;35(3)16 NeiseW.JournalofEngineeringforIndustry,1982;10417 NayfehAH,KaizeJE,TeliouisDP.AIAAJournal,1975;1318 ,,..,1993;18(4)19 NelsonPA.JournalofSoundandVibration,1994;177(5)20 JosephP,NelsonPA,FisherMJ.J.Acoust.Sco.Am.,1999;106(2)21 GeraldC.Lauchle,JohnR.Activecontrolofaxial-flowfannoise.J.Acoust.Sco.Am.,1997;101(1)22 NeiseW,KoopmannGH.J.Vib.Acoust.,1991;11323 ..,1995;20(4)24 ..,1995;20(5)25 ..,1997;22(1)26 ..,1997;22(2)27 ..,1997;22(4)28 NelsonPA.JournalofSoundandVibration,1987;116(3)29 .のの.,C(1993)30 ,..,1999;16(2)(下转第25页)32 2001292Ktr=2.30,。4(b),Ktr=2.29,,,,Ktr=2.30。Δ/b0.04,,。4(c)Ktr=2.29,,Ktr2.28,4(d),。Δ/b=0.04Ktr=2.29。4 (1);(2),,,;(3),,。,。1 GreizteEM.SurgeandRotatingStallinAxialFlowCompressors,Part1:TheoreticalCompressionSystemModel.ASME75-GT-9,19752 MoorreFK,GreizterEM.ATheoryofPost-StallTransientsinAxialCompressionSystem,Part-1:De-velopmentofEquations.TransactionoftheASMEJournalofEngineeringforGasTurbineandPower,1986;108:68～763 GreizteEM,MooreFK.ATheoryofPost-StallTransientsinAxialCompressionSystem,Part-2:Application.TransactionoftheASMEJournalofEngi-neeringforGasTurbineandPower,1986;1984 LongleyJP.AReviewofNon-SteadyFlowModelsforCompressorStability.ASME93-GT-17,19935 NikolosIK,DouvikasDI,PapailiouKD.AMethodfortheCalculationoftheTipClearanceFlowEffectsinAxialFlowCompressors,Part1:DescriptionofBasicModel,ASME93-GT-150,19936 NikolosIK,DouvikasDI,PapailiouKD.AMethodfortheCalculationoftheTipClearanceFlowEffectsinAxialFlowCompressors,Part2:CalculationProce-dure.ASME93-GT-151,19937 AdkinsGGJr,SmithLHJr.SpanwiseMixinginAx-ialFlowTurbomachines.ASMEJournalofEngineeringforPower,1982;104:,,1968,,,、、,、、。:515063。(上接第32页)31 KoopmannGH,NeiseW,ChenW.JournalofVi-bration,Acoustics,Stress,andReliabilityinDesign,1988;110(3)32 BullmoreAJ,NelsonPA,ElliottSJ.JournalofSoundandVibration,1987;117(1)33 JosephP,NelsonPA,FisherMJ.Proceedings-InternationalConferenceonNoiseControlEngineer-ing,199634 ChenKA,MaYL.ProceedingsofInter-noise,199135 SnyderSD,HansenCH.J.Acoust.Sco.Am.,1989;86(1)36 ,..,1993;18(5)37 Orduna-BustamanteF,NelsonPA.J.Acoust.Soc.Am.,1992;91(5)38 FullerCR.JournalofSoundandVibration,1990;136(1)39 BullmoeAJ,NelsonPA,ElliottSJ.JournalofSoundandVibration,1990;140(2)40 CarlHGerhold.AIAAJournal,1997;35(1):,。:710049。25Vol.29,No.2,2001 FLUIDMACHINERY stability,post-stalltransientsReviewofResearchonFanNoiseReduction LuiQuihongetal(29…………………………)Somerecentresearchesaresummarized,sometechniquesforreducingfannoiseareclassified,someachievementinthisfieldareintroduced,andfinally,somedevelopingtendencyandfurtherresearchareap-proached.Keywords:fan,noisecontrol,reviewTheReformingofthe2MCL527-5TypeRichGasCompressorShaftSealing MaWenyietal(33……………………………)Thefailureoftheswim-ringsealusingon2MCL527-5typecompressor,thebasicprincipleandstructureofdryroundgasseal,theperformanceandefficion,oftransferingoilmembraneswin-ringsealintodaul-sidedryroundgassealaremainlyintro-duced.Keywords:compressor,swin-ringseal,sprialgroove,daul-sidedryroundgassealDevelopmentonVacuumValveforClosedContainerofThermoelectricCoolingVideoCameraFuMingxingetal(40……………………………)Accordingtoespecialrequiresofthethermoelec-triccoolingvideocamera,thevacuumvalveforclosedcontainerhasbeendeveloped,whichconfigureissim-pleandsothatthevolumeofthecameraissmall.Keywords:thermoelectriccooling,videocamera,pressurizingcontainer,vacuumvalveSeveralKeyTechn