Numerical estimation of cavitation空光设计

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1、IOPConferenceSeries:EarthandEnvironmentalScienceOPENACCESSRelatedcontent-NumericalsimulationofunsteadyNumericalestimationofcavitationintensitysheet/cloudcavitationTDTran,BNennemann,TCVuetal.Tocitethisarticle:LKrumenackeretal2014IOPConf.Ser.:EarthEnviron.Sci.22052014-Numericalpredictionofimpactforce

2、incavitatingflowsBZhuandHWang-NumericalandexperimentalinvestigationsoncavitationerosionViewthearticleonlineforupdatesandenhancements.RFortesPatella,AArcherandCFlageulRecentcitations-Numericalinvestigationsoncavitationintensityfor3DhomogeneousunsteadyviscousflowsCLeclercqetalThiscontentwasdownloaded

3、fromIPaddress117.165.40.107on24/05/2018at15:2027thIAHRSymposiumonHydraulicMachineryandSystems(IAHR2014)IOPPublishingIOPConf.Series:EarthandEnvironmentalScience22(2014)052014doi:10.1088/1755-1315/22/5/052014NumericalestimationofcavitationintensityLKrumenacker1,RFortes-Patella1,AArcher21Univ.Grenoble

4、Alpes,LEGI,F-38000Grenoble,France2EDFR&D,DepartementMFEE,6quaiWatier78401ChatouCEDEX,FranceE-mail:laurent.krumenacker@legi.grenoble-inp.frAbstract.Cavitationmayappearinturbomachineryandinhydraulicorices,venturisorvalves,leadingtoperformancelosses,vibrationsandmaterialerosion.Thisstudyproposeanewm

5、ethodtopredictthecavitationintensityofthe ow,basedonapost-processingofun-steadyCFDcalculations.Thepaperpresentstheanalysesofcavitatingstructures'evolutionattwodierentscales:AmacroscopiconeinwhichthegrowthofcavitatingstructuresiscalculatedusinganURANSsoftwarebasedonahomogeneousmodel.Simulationsofc

6、avitating owsarecomputedusingabarotropiclawconsideringpresenceofairandinterfacialtension,andReboud'scorrectionontheturbulencemodel.ThenasmallonewhereaRayleigh-Plessetsoftwarecalculatestheacousticenergygener-atedbytheimplosionofthevapor/gasbubbleswithinputparametersfrommacroscopicscale.Thevolumedam

7、agerateofthematerialduringincubationtimeissupposedtobeapartofthecumulatedacousticenergyreceivedbythesolidwall.Theproposedanalysismethodisappliedtocalculationsonhydrofoilandoricegeometries.Comparisonsbetwee