InvestigationoftheOptimalInteractionZoneLengthforaLargeWave-currentFlumeYAOHai-yuan1,2,ZANGZhi-peng1,3,FANGZhuo2,TIANYing-hui4,CHENGNing5(1.StateKeyLaboratoryofHydraulicEngineeringSimulationandSafety,TianjinUniversity,Tianjin300072,China;2.TransportPlanningandResearchInstitute,MinistryofTransport,Beijing100028,China;3.KeyLaboratoryofEarthquakeEngineeringSimulationandSeismicResilienceofChinaEarthquakeAdministration,TianjinUniversity,Tianjin300350,China;4.MelbourneSchoolofEngineering,TheUniversityofMelbourne,Victoria3010,Australia;5.ChinaHarbourEngineeringCompanyLimited,Beijing100027,China)Abstract:Inthisstudy,anumericalwave-currentflumeisestablishedbasedonOpenFOAMsoftwareaccordingtotherealconfigurationofaphysicalflume.Thecurrentinletissetinfrontofthewavepad⁃dle,whichresultsintheformationofaninteractionzonedownstreamofthecurrentinlet.Theaimofthisstudyistoinvestigatetheeffectsofthemaininfluentialparametersonthelengthoftheinteractionzone.Thus,theoptimalconfigurationofwave-currentflumescanbedeterminedtoobtainthemini⁃mumlengthoftheinteractionzone,therebymaximizingtheeffectivetestsection.Theverticalprofilesofthetime-meanaveragedhorizontalvelocityatdifferentlocationsarecalculated.Thelengthoftheinteractionzoneisdeterminedaccordingtodeviationsofthetime-meanvelocityfromthestablevalueoflessthan10%.Basedonthenumericalresults,theoptimalvaluesoftheincidentangle,locationandwidthofthecurrentinletaredetermined.Theeffectsofwaterdepth,waveperiod,waveheight,andcurrentinletvelocityonthelengthoftheinteractionzonearealsoinvestigated.Keywords:numericalwave-currentflume;interactionzone;configurationparameter;optimaldesignCLCnumber:TV139.2Documentcode:Adoi:10.3969/j.issn.1007-7294.2023.06.0050IntroductionPhysicalmodelingisoneofthemostcommonly-usedmethodstostudyhydrodynamicissuesincoastalandoffshoreengineering[1].Alarge-scaleearthquakeengineeringsimulationfacilityhasbeeninstalledinTianjin.Inthefacility,alargeshakingtablesetupinawave-currentflumeisusedtosimulatetheresponsesofcoastalstructu...
