经典文献-A Review of two-phase flow dynamic instabilities in tube boiling systems.pdf

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1、Availableonlineatwww.sciencedirect.comInternationalJournalofHeatandMassTransfer51(2008)399–433www.elsevier.com/locate/ijhmtReviewAReviewoftwo-phaseflowdynamicinstabilitiesintubeboilingsystemsa,*bS.Kakac,B.BonaDepartmentofMechanicalEngineering,TOBBUniversityo

2、fEconomicsandTechnology,Sogutozu,Ankara,TurkeybDepartmentofMechanicalandAerospaceEngineering,UniversityofMiami,CoralGables,FL33124,USAReceived22May2007;receivedinrevisedform10September2007Availableonline11December2007AbstractTheearliestresearchinthefieldoftw

3、o-phaseflowwasconductedbyLorentz(1909).Thestudiesontheanalysisoftwo-phaseflowinstabilitiesbyLedinegg(1938)createdconsiderableinterestconcerningthephenomenonofthermallyinducedflowinstabilityintwo-phaseflowsystems.Theobjectiveofthisreviewistosumuptheexperimentala

4、ndtheoreticalworkcarriedoutbyvariousinvestigatorsoveraperiodofseveralyears,demonstratingandexplainingthreemaininstabilitymodesoftwo-phaseflowdynamicinstabilities,namely,density-wavetype,pressure-droptypeandthermaloscillations,encounteredinvariousboilingflowch

5、annelsystems.Thetypicalexperimentalinvestigationsoftheseinstabilitiesintubeboilingsystemsareindicatedandthemostpopularmodelstopredictthetwo-phaseflowdynamicinstabilities,namelythehomogenousflowmodelandthedrift-fluxmodelsareclarifiedwiththesolutionexamplesandthe

6、validationofthemodelresultswithexperimentalfindingsarealsoprovided.Ó2007ElsevierLtd.Allrightsreserved.Keywords:Two-phaseflowinstabilities;Pressure-drop;Density-wave;ThermaloscillationsContents1.Introduction.....................................................

7、..........................4012.Classificationsoftwo-phaseflowinstabilities........................................................4012.1.MechanismofLedinegginstability..........................................................4012.2.Mechanismofdensity-waveosci

8、llations.......................................................4022.3.Mechanismofpressure-droposcillations......................................................4023.Approachesintwo-phaseflowstabilityana