Two- Phase Flow Patterns and Heat Transfer in Parallel Microchannels-中国Betway体育网页登陆

摘要 MicroChannelheatsinkswithtwo-phaseflowcansatisfytheincreasingheatremovalrequirementsofmodernmicroelectronicdevices.Oneoftheimportantaspectsassociatedwithtwo-phaseflowsinmicrochannelsistostudythebubblebehavior.However,intheliteraturemostofthereportspresentdataofonlyasinglechannel.Thisdoesnotaccountforflowmixingandhydrodynamicinstabilitythatoccursinparallelmicrochannels,connectedbycommoninletandoutletcollectors.Inthepresentstudy,experimentswereperformedforair-waterandsteam-waterflowinparalleltriangularmicrochannelswithabaseof200-300μm.Theexperimentalstudyisbasedonsystematicmeasurementsoftemperatureandflowpatternbyinfraredradiometryandhigh-speeddigitalvideoimaging.Inair-waterflow,differentflowpatternswereobservedsimultaneouslyinthevariousmicrochannelsatafixedvaluesofwaterandgasflowrates.Insteam-waterflow,instabilityinuniformlyheatedmicrochannelswasobserved.

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Two- Phase Flow Patterns and Heat Transfer in Parallel Microchannels

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