基于数值模拟的离心泵性能预测

:10050329(2007)10000905,(,310027):CFDFLUENT01.35Qopt14,,,:;;;:TH311:APerformancePredictionofCentrifugalPumpBasedontheMethodofNumericalSimulationWANGXiu2yong,WANGCan2xing(ZhejiangUniversity,Hangzhou310027,China)Abstract:ACFDmethodhasbeendevelopedtosimulatetheentirethree2dimensionalflowfieldinacentrifugalpump.Byuseofthismethod,theperformanceofpumpsuchashead,shaftpowerandefficiencyarepredicted,basedonthecalculationoffour2teendifferentoperatingconditionsintheflowrangefrom0to1.35Qopt.Throughthecomparisonofsimulatingresultsfortwokindsoffieldswhicharecomposedofdifferentregions,itisprovedthattheresultwillbemoreaccuratewhenthefrontandbackcham2bersintheimpeller,andthesealclearanceareinvolvedinthecalculatingregions.ThisCFDmethodcanbeusedforvirtualex2periment,thatis,usedtotesttheperformanceofacentrifugalpump,anditwillbehelpfulforthedesignandoptimizationofanewcentrifugalpump.Keywords:centrifugalpump;numericalsimulation;performanceprediction;three2dimensionalflowfield1,CFD,CFD,,,CFD,,,CFD[1],,CFD[25]CFD,,[6,7],[8,9],:20061230:20070806920073510,,,,,,,,[10],,,,(),1,(),,[11]1,CFDFLUENT,,,,22.1M129-50,,Pro/ENGINEER,GAMBIT,,0.3mm,2,75.9,73.1,65.1,60.522.2,RNGk-,01FLUIDMACHINERYVol135,No110,2007SIMPLEC,,,2.3,MRF,,,33.1:H=pout-ping+h(1)pout,Papin,Pah,m,kg/m3g,m/s2,,:P=M+Pm(2)M,Nm,rad/sPm,(13)%[12],W:=gHQP(3)Q,m3/s,Pm,FLU2ENT3.2:2900r/min,13.9L/s,20.54m,3.54kW,79.05%,998.2kg/m3,1.00310-3PasPm=70W,h=0.31m,,,,0.6QoptQopt1.2Qopt,121(L/s)8.3313.9016.70(m)23.5020.5418.34(m)22.5221.0619.26(%)-4.172.535.02(W)280035403810(W)280037104010(%)04.805.25(%)68.5879.0578.72(%)65.7377.1778.31(%)-4.16-2.38-0.522(L/s)8.3313.9016.70(m)23.5020.5418.34(m)22.6221.4219.81(%)-3.744.288.021,,5%,2,,,,,8%3,:,;,1120073510,3,,,,3.3,01.35Qopt14,:00.15Qopt0.38Qopt0.6Qopt0.74Qopt0.8Qopt0.85Qopt0.9Qopt0.95QoptQopt1.05Qopt1.1Qopt1.2Qopt1.35Qopt14,,4,00.74Qopt,0.74Qopt1.35Qopt,,[10],,,,,,4H-Q56,,,,,,5P-Q6-Q21FLUIDMACHINERYVol135,No110,20074,,,;,,,[1]CraigHornsby.CFDDrivingpumpdesignforward[J].WorldPumps,2002,(43l):l8222.[2]JosGonzlez,JoaqunFernndez,EduardoBlanco,etal.Numericalsimulationofthedynamiceffectsduetoimpeller2voluteinteractioninacentrifugalpump[J].JournalofFluidsEngineering,2002,124(2):3482355.[3]BaunDaniel.Hydrodynamicforcesincentrifugalpumpandcompressorimpellersinvolutecasings:measure2mentsusingmagneticbearingsandCFDsimulations[D].AnnArbor,USA:UniversityofVirginia,2002.[4]ByskovRikkeK,JacobsenChristianB,PedersenNicholas.FlowinaCentrifugalPumpImpelleratDe2signandOff2DesignConditionsPartII:LargeEddySimulations[J].JournalofFluidsEngineering,2003,125(1):73283.[5],.[J].,2006,34(2):30233.[6],,.[J].,2006,40(3):2572260.[7]PhilippeDupont,TomoyoshiOkamura.Cavitatingflowcalculationsinindustry[J].InternationalJournalofRotatingMachinery,2003,9(3):1632170.[8].[D].:,2005,952109.[9].[D].:,2005,50254.[10],,,.[J].,2006,34(1):125.[11],.[J].,2005,(1):20223.[12],.[M].:,1983.43244.:(19782),,,,:310027(35)[2]Merati,Parviz,Okita,etal.Experimentalandcom2putationalInvestigationofflowandThermalBehaviorofaMechanicalSeal[J].TribologyTransactions,1999,42(4):7312738.[3],.Ansys[J].,2006,(9):1162119.[4],,,.[J].,2006,(1):1202124.[5],,.[J].,2006,(12):124.[6]MilmanM,PetrickW.ANoteontheSolutiontoaCommonThermalNetworkProblemEncounteredinHeat2TransferAnalysisofSpacecraft[J].AppliedMathematicalModeling,2000,24(12):8612879.[7]ReissH.ACoupledNumericalAnalysisofShieldTemperatures,HeatLossesandResidualGasPres2suresinanEvacuatedSuper2InsulationUsingThermalandFluidNetworks:PartI:StationaryConditions[J].Cryogenics,2004,44(4):2592271.[8],,.[J].,2002,20(1):32235.[9].[D].,2005.:(19772),,,,:2330113120073510