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Rotating Seal Rig Experiments Test Results and Analysis Modeling

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ProceedingsofGT2006ASMETurboExpo2006:PowerforLand,SeaandAirMay,8-112006,Barcelona,SpainGT2006-90957RotatingSealRigExperiments:TestResultsandAnalysisModelingRogerPaolilloCheng-ZhangWangPratt&Whitney,EastHartford,CTUSA06108T.K.VashistInfoTechEnterprisesLimited138,Bangalore,India560095DavidCloudPratt&Whitney,EastHartford,CTUSA06108FonsM.G.BingenSulzerMetcoTurbineComponents,Lomm,TheNetherlandsGerritA.KoolNationalAerospaceLaboratoryNLR,Amsterdam,TheNetherlandsAbstractCurrentandfuturegasturbineenginesaresubjecttoincreasingperformancerequirementsandimprovedfuelefficiencies.Theresultantenginecyclesincreasecoreflowtemperaturesrequiringadditionalcoolingflowwhilerequiringareductioninparasiticleakageby25%-50%tomeettheperformancegoals.Theachievementofthereducedleakagerequiresthatsealdesignconceptsbetestedandimprovementsvalidatedinenginelikeconditionsbeforetheyareintroducedintothegasturbineproduct.Thispaperdescribestheprocessofhowapotentiallylowleakagesealdesignwasevaluatedandtestedinanadvancedsealtestrigfacility.Howexistingenginesealleakagerigdatawasusedtovalidatephysicsbasedmodels(CFD)ofbaselinelabyrinthsealconfigurations,thenusedtorunbacktobacksensitivitystudiestoidentifysealdesigncharacteristicsthatcouldprovidelowleakagesealdesigns.ThepaperdiscussestheuseofanAdvancedSealRig(ASR)facilitytotestsealdesignconceptsforgasturbineengineapplications.Testsealflowresultsarepresentedandcomparedtothebaselinesealtests.Thedifferencesbetweenthenewsealdesignflowtestresultsandthebaselinesealflo

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