Prediction-method-of-impeller-performance-and-analysis-of-loss-mechanism-for-mixed-flow-pump

SCIENCECHINATechnologicalSciences©ScienceChinaPressandSpringer-VerlagBerlinHeidelberg2012tech.scichina.comwww.springerlink.com*Correspondingauthor(email:bg03@mails.tsinghua.edu.cn)•RESEARCHPAPER•July2012Vol.55No.7:1988–1998doi:10.1007/s11431-012-4867-9Predictionmethodofimpellerperformanceandanalysisoflossmechanismformixed-flowpumpBINGHao1*,TANLei2,CAOShuLiang1&LULi31StateKeyLaboratoryofHydroscienceandEngineering,TsinghuaUniversity,Beijing100084,China;2StateKeyLaboratoryofTribology,TsinghuaUniversity,Beijing100084,China;3HydraulicMachineryDepartment,ChinaInstituteofWaterResourcesandHydropowerResearch,Beijing100038,ChinaReceivedOctober12,2011;acceptedMarch22,2012;publishedonlineMay28,2012Alossmodelforthemixed-flowpumpimpellerswasdevelopedbysummarizingavarietyoflosscalculationformulassys-tematically.TheinternalflowfieldoftheimpellerwasobtainedbyemployingtheiterativecalculationforS1andS2streamsurfacestosolvethecontinuityandmotionequationsoffluid.Basedonthecalculationmethodoftheflowfieldandthelossmodel,itisachievedtopredicttheimpellerperformanceofthemixed-flowpumpandtheperformancecurvesofamixed-flowpumpmodelwithadjustableblades.Comparedwiththetestdata,thelossmodelofthemixed-flowpumpbasedontheiterativecalculationcanpredicttheimpellerperformancequicklyandaccurately,whichhasahighvalueontheengineeringapplica-tions.Basedonthetestverification,curvesofvariouskindsoflossesvariedfortheflowratewereanalyzedunderdifferentbladeangles.Inaddition,themechanismsofvariouskindsoflossesinsidethemixed-flowpumpimpellerwerediscussedin-depth.mixed-flowpump,lossmodeling,iterativecalculation,performanceprediction,lossmechanismCitation:BingH,TanL,CaoSL,etal.Predictionmethodofimpellerperformanceandanalysisoflossmechanismformixed-flowpump.SciChinaTechSci,2012,55:19881998,doi:10.1007/s11431-012-4867-91IntroductionThemixed-flowpumpsarewidelyappliedinthefieldsofhydraulicengineering,wastewatertreatment,watersupplyanddrainageandsoon.Atpresent,numericalsimulationisthemainlyusedmethodforperformancepredict