基于流体诱发振动的非接触式湿气流流型识别(英文)

基于流体诱发振动的非接触式湿气流流型识别(英文)IntroductionIn many industries, including aerospace, chemical processing and

() 基于流体诱发振动的非接触式湿气流流型识别英文 Introduction Inmanyindustries,includingaerospace,chemicalprocessing andtransportation,precisecontroloffluidflowsiscriticalto achievingefficientandsustainableoperation.Oneofthekey challengesistoidentifytheflowpatternsinreal-time,especiallyin thepresenceofmoisture.Traditionaltechniquesrelyonphysical probesandsensors,whichcanbeintrusiveandpronetofouling. Inrecentyears,non-contactopticaltechniqueshaveemergedas analternativeapproach,inwhichthefluid-inducedvibrationsare measuredremotely.Thispaperpresentsareviewoftheuseof non-contactopticaltechniquesforflowpatternidentification. Background Theflowoffluidscanmanifestinavarietyofpatterns, rangingfromlaminartoturbulent andtransitionalflow.Thesepatternshavedifferenteffectson theperformanceoffluidsystems,includingpressuredrop,heat transfer,andmixingefficiency.Inaddition,thepresenceof moisturecansignificantlyaltertheflowdynamics,forexample, duetocondensation,evaporation,andhumidityeffects. Therefore,theidentificationoftheflowpatternsisessentialfor boththefundamentalunderstandingoffluiddynamicsandthe optimizationofindustrialprocesses. Traditionally,flowpatternshavebeenidentifiedusing physicalsensorssuchaspressuretaps,hotwireanemometers,and Dopplersignaldetectors.Thesesensorsareofteninvasiveand requirecloseproximitytothefluid,whichcanbechallengingin harshenvironmentsorcomplexgeometries.Furthermore,the sensorsmayinterferewiththeflowbehaviororbesubjectto fouling,corrosion,orwear. Non-contactopticaltechniqueshavegainedpopularityin recentyearsfortheirabilitytomeasurefluid-inducedvibrations remotelyandwithoutcontactwiththefluid.Thesetechniques utilizetheprincipleoflaserDopplervelocimetryoroptical coherencetomographytodetectthemovementofthefluid moleculesortheboundarysurfaces.Theresultingsignalscanbe