微型燃气轮机向心透平导向器的流场分析与设计研究

39920059JOURNALOFXI'ANJIAOTONGUNIVERSITYVol.39№9Sep.2005,(,710049,):,5,.:,;,1%.0.03º,0.1%.,0.6～1.0mm、15%.:;;;;:TK124:A:0253987X(2005)09096204FlowAnalysisandDesignofRadialInflowTurbineGuideVanesforMicroturbineDengQinghua,FengZhenping(SchoolofEnergyandPowerEngineering,Xi'anJiaotongUniversity,Xi'an710049,China)Abstract:Thegeneraldesignprinciplesonshape-designofradialinflowturbineguidevanesweredis-cussed.Fivekindsofguidevanesweredesignedwithdifferentthicknessoftrailingedges,andtheflowfieldsintheguidevanespassagewereinvestigatedby3-dimensionalviscousnumericalsimulation.There-sultsindicatethatwiththepresentgeneraldesignprinciplesforradialinflowturbineguidevanes,highflowefficiencyofthehigh-subsonicguidevanecanbeobtained,andtheradiusoftheradialinflowturbinecanbereducedeffectively.Relativethicknessofthetrailingedgehasimportantimpactonflowefficiencyandcharacteristics.Ifrelativethicknessoftrailingedgeincreases1%,inletflowangleoftheimpellerwillreduce0.03degreeandvelocitycoefficientoftheguidevaneswillreduce0.1%.Therefore,inordertoa-chievehighaerodynamicperformancethethicknessoftrailingedgeofguidevanesshouldbewithintherangeof0.6to1.0millimeterandtherelativethicknessoftrailingedgelessthan15%,basedonthepres-entstudywithconsiderationontheavailablesuperalloycasttechnology.Keywords:microturbine;radialinflowturbine;guidevanes;flowcharacteristics;numericalsimulation2.、、、[1].,,,,[1].,.1%,1%0.2%[1,2],:20050103.:(1975～),,;(),,,.:(2002AA503020);..,,[3,4].[14],.100kW[2,5,6],.,,.,NUMECAFINE/Turbo5,.,100kW.11.1,.,,,R1R41.25～1.35,1.,,0.5～1.0,,.,,,.,.,,,,,.,,R3R41.1.2RteOth,Srte,,、.,,.,,0.6mm[7],γt,[8].,,.11.2100kW:α145º;α413º;p01360kPa;T011173.15K;p4=206kPa;R493.0mm.,1,1,RteOth.1R1/mm120.0R3/mm103.0Rle/mm2.0b/mm40.59tN/mm28.14γt/(º)7.5γps/(º)8.1αy/(º)72.2ZN/23LN/mm20.03699,:,5.,,,,2.2Rte/mm0.300.550.801.051.30Oth/mm6.216.065.925.775.632Rte·Oth-1/%4.89.113.518.223.12,HOH,373723,、、,.NUMECAEuranusNavier-Stokes,Spalart-Allmaras.,,,.5,.32,Ctp=(p04-p4)/(p01-p4)2,4.8%23.1%,3.5%,.,3.5%2%,4.8%23.1%,2%,.,,13.2º12.6º,0.6º.3,2(a)(b)A3Csp=(pL-p4)/(p01-p4)3,,,,.,,,.4,0.7,(0.95),.,46939(a)4.8%(b)23.1%413.5%100kW.,,(5),[5,6],5100kW.4(1)1.25～1.35、、、,,.(2)1%,0.03º,,0.1%,0.1%.(3),0.6～1.0mm,15%,.:[1],.[M].:,1987.[2].100kW[D].:,2004.[3]ReichertAW,SimonH.Numericalinvestigationsontheoptimumdesignofradialinflowturbineguidevanes[A].ASMETurboExpo1994,Hague,Netherlands,1994.[4]ReichertAW,SimonH.Designandflowfieldcalcu-lationsfortransonicandsupersonicradialinflowtur-bineguidevanes[J].ASMEJournalofTurbomachin-ery,1997,119(2):103113.[5]FengZhenping,DengQinghua,LiJun.Aerothermo-dynamicdesignandnumericalsimulationofradialin-flowturbineimpellerfora100kWmicroturbine[A].ASMETurboExpo2005,RenoHilton,Nevada,2005.[6]XieYonghui,DengQinghua,DiZhang,etal.Strengthdesignnumericalanalysisofradialinflowtur-bineimpellerfora100kWmicroturbine[A].ASMETurboExpo2005,RemoHilton,Nevada,2005.[7].:[Z]..:,2003.[8]ErogluH,TabakoffW.Effectofinletflowangleontheerosionofradialturbineguidevanes[J].ASMEJournalofTurbomachinery,1990,112(1):6470.()5699,: