船用三级气水分离器阻力特性计算

:2002-04-22;:2002-05-29:(1962-),,,,.:1001-2060(2002)04-0383-04船用三级气水分离器阻力特性计算孙海鸥1,孙君2,刘学义3,曹松棣4(1哈尔滨工程大学动力与核能工程学院,黑龙江哈尔滨150001;2上海第七八研究所,上海200011;3哈尔滨第七三研究所,黑龙江哈尔滨150036;4海军驻哈尔滨汽轮机厂有限责任公司军事代表室,黑龙江哈尔滨150046):对两级惯性级进行了阻力特性数值计算,还利用所创建的多层丝网模型进行了网垫级阻力特性数值计算,完成了三级气水分离器总阻力特性数值计算根据要求优选了一种气水分离器结构方案并进行了样机制造,其阻力特性的实测结果表明,数值计算的精度满足工程设计要求,为新型气水分离器研制时的阻力特性预估提供了一种简便快捷高精度的分析手段:;;:O241:A1,,,,(--),,,,,,,2Boussinesq,Navier-Stokes:t+xi(ui)=0(1)t(ui)+xj(uiuj)=pxi+ijuj(2)t[(e+uiui2)]+xj{uj[(e+uiui2)+P]}=xi(!Txi+ujij)(3)p=RT(4):ij=(∀+∀T)(uixj+ujxi)-23#ij(∀+∀T)ukxkij-;-;ui-;p-;e-;!-;T-;∀;∀T-k∃,k∃:DkDt=xi[(∀+∀T%k)kxi]+Gk+Gb-∃-YM(5)D∃Dt=xi[(∀+∀T%∃)∃xi]+Cl∃∃k!(Gk+C3∃Gb)-C2∃∃2k(6),Gb,(5)(6)DkDt=xi[(∀+∀T%k)kxi]+Gk-∃-YM(7)D∃Dt=xi[(∀+∀T%∃)∃xi]+Cl∃∃kGk-C2∃∃2k17(100)20027(8)Gk=∀TS2S=2SijSij,Sij=12(uixj+ujxi)SarkarYM=∃2M2tMt=k/&2∀T=C∀k2∃(9)B.E.LaunderD.B.SpaldingCl∃C2∃C∀k∃%k%∃Cl∃=1.44,C2∃=1.92,C∀=0.09,%k=1.0,%∃=1.33,110%,,,∀#,2图1惯性级单通道计算域图2惯性级∀级#计算域4,,d,,,,,343,L1L2,,,4:L=L1L2L1+L2-d(10)图3一般型式的丝网图4二维多层丝网5,,3842002,,5~7图5首级惯性级计算域网格图6首级惯性级计算域网格(局部)图7网垫级计算域网格(局部)8,,,,2.5,,,,,,9,,,,,,图8首级惯性级速度分布图9首级惯性级静压分布图10首级惯性级总压分布10,,,,,3854,:图11网垫级速度分布(局部)图12网垫级静压分布(局部)图13网垫级总压分布(局部)图14气水分离器总阻力特性11~13,,,(4),,,,,,,,14,,3~10m/s23Pa,6~10m/s3.6%6--,,,,,,:[1].[M].,,1998.[2].[M].,,2000.[3].[J].,1987,19(4):293-304(渠源编辑)3862002ladenGasTurbineandthePredictionoftheChangeinBladeVibrationFrequency[,]/LUJiahua,LINGZhiguang(AirTransportInstituteundertheShanghaiUniversityofEngineeringTechnology,Shanghai,China,PostCode:200336)//JournalofEngineeringforThermalEnergy&Power.-2002,17(4):379~382ThemovementlocioftwodifferentdensitydistributiondiameterparticlesafteragassoliddualdirectioncouplingoflowparticleconcentrationweresolvedbasedonEulerLagrangesolutionbasicideaandthesimulationcalculationofthethreedimensionalviscidturbulentflowfieldofadualstagetransonicgasturbine.ThishasbeenaccomplishedthroughtheuseofaparticlerandomtrajectorymodelandPSICmethod.Onthisbasistheerosionrateofthebladeswascalculated.Itsdistributionlawrelativelyapproximatestotheerosionconditionoffullscaleblades.Then,byutilizingtheinterrelationshipoftheestablishedbladeerosionrateandvibrationfrequencythetimedependentvariationofbladevibrationfrequencywitherosionwasforecast.Asaresult,afruitfulattempthasbeenmadetoidentifytheinfluenceofbladeerosiononbladevibrationfrequency.Keywords:particleladengasturbine,gassoliddualdirectioncoupling,numericalsimulationofbladeerosion,bladevibrationfrequency=CalculationoftheResistanceCharacteristicsofaThreestageMoistureSeparatorforMarineApplications[,]/SUNHaiou(HarbinEngineeringUniversity,Harbin,China,PostCode:150001),SUNJun(ShanghaiNo.708ResearchInstitute,Shanghai,China,PostCode:200011),LIUXueyi(HarbinNo.703ResearchInstitute,Harbin,China,PostCode:150036)//JournalofEngineeringforThermalEnergy&Power.-2002,17(4):383~386Thenumericalcalculationofresistancecharacteristicswasperformedforatwostageinertialstagefollowedbythenumericalcalculationofameshpadstageresistancecharacteristicsbytheuseofanewlybuiltmultilayergauzemodel.Asaresult,thenumericalcalculationhasbeencompletedforthetotalresistancecharacteristicsofathreestagemoistureseparator.Onthebasisofrelevantrequirementsanoptimumconstructionversionofthemoistureseparatorwasselectedandasampleunitmanufactured.Themeasuredresistancecharacteristicsofthisunitindicatethatthenumericalcalculationaccuracyhasmettheengineerigdesignrequirements.Alltheabovehasmadeitpossibletoprovideasimple,rapidandhighprecisionanalyticalmeansforthepredictionofresistancecharacteristicsduringthedevelopmentofanewtypeofmoistureseparators.Keywords:moistureseparator,resistancecharacteristics,numericalcalculation=DesignStudyoftheControlSystemofMechanicalatomizationOilSprayersforaHighcapacitySteamTurbine[,]/LILaichun,WEIShaojie(HarbinNo.703ResearchInstitute,Harbin,China,PostCode:150036),DENGCaixia(AutomationResearchInstituteundertheHarbinEngineeringUniversity,Harbin,China,PostCode:150001)//JournalofEngineeringforThermalEnergy&Power.-2002,17(4):387~390Todate,acontrolsystemofmechanicalatomizationoilsprayershasneverfoundapplicationinChinaforlargecapacitymarinesteamturbines.Onthebasisofdrawingonrelevantoverseastechnologycoupledwiththepresentdevelopmentlevelofautomationinstrumentationtheauthorshaveconductedadesignstudyoftheabovementionedcontrolsystem.Abriefaccountisgivenofthecomposition,workingprinciplesandthecontrolmodeofvariousautomaticregulatingloopsofanallelectriccontrolsystem.Alsopresentedaretherelationshipcurvesofrelevantparameters.Keywords:superchargedboiler,largecapacityoilsprayer,controlsystem=ExperimentalInvestigationontheImprovementofaSpeedMeasuringPumpforaMarineSteamTurbineUnit[,]/LIUQuanen,LIUJiang,SONGChenglin,QIUZufa(HarbinNo.703ResearchInstitute,Harbin,China,PostCode:150036)//JournalofEngineeringforThermalEnergy&Power.-2002,17(4):391~392,398Thetheoreticalcalculationofoilleakageofaspeedmeasuringpumpwitheitherplatetypeorfloatingtypesealconstructionhasbeenperformedandtheoilleakageasinfluencedbythesealgapchangeinthesetwotypesofsealconstructioncomparedandidentified.Onthisbasistheau