微通道热沉内流体流动与传热的数值模拟

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1、国内图书分类号：TKl24题Y7{j2191单位代码：10005学号；$200205024密级：北京工业大学硕士学位论文英文并列NUMERICALSIbiULATIONOFFLUIDFLOWAND题目HEATTRANSFERINMICROCHANNELHEAT—SINK研究生姓名：割壹专业：热篚王掘，‘导师姓名：基旦接研究方向：翌丝篮热壁基查直堑蕴盔史鲍廛旦职称：熬援论文报告提交El期2地5：§授予单位名称和地址韭塞工些左堂jb塞吏麴旦匡王压国l业里蛏亟蕴丛．盥业丝北京工业大学工学硕士学位论文ABSTRACTAs

2、miniaturization，reductioninproductsweightbecomethelatesttrendinelectronicproductsdevelopment，traditionaldesignmethodsandmanufacturingtechnologyfailtomeettoday’Sdemands．Ofthecurrentlyavailablecoolersforelectronicproductswithahiigllheatflux，microcharmelheatsink

3、shavebeenprovedtobe如letoprovidethebestheattransferperformanceandareoneofthemostpromisingcoolers．ThevalidityofthedescriptionoffluidflowandheattransferinamicrochannelheatsinkusingtheNavier-stokesequationandtheheatconductionequationisdiscussedinthispaper．Tllispa

4、peralsoclarifiesthattheRNG缸sturbulencemodelcanbeusedinthenumericalsimulationof也eturbulentflowinamicrochannelheatsink．Fourcoolantsincludingwater,methanol，ethanolandR113areusedinthesimulafion．theflowfieldsandtemperaturefieldsiUmireoehannelsofdifferentstructures

5、andsizesaresimulated．PressurelOSSesofdifferentpartsofthemicrochannelandcontributionstoheattransferbydifferentsurfaceswithin也emicrochannelareanalyzed．Forahigh-powerlaserdiodebarcoolingheatsink，nurnericaisimulationsarecarriedoutatRe=2500(Reynoldsnumber)，4Lm=27℃

6、(themaximaltemperatureriseatsubstratesurface)andP=-3．6W(thepumpingpower)，forthevariouswidthofmicrocharmelinlets／outlets，thevariouswidthanddepthofmicrochannels，andthevariousthicknessoffinsandsubstrates．Theinfluenceofvariouswidthsanddepthson也eheattransferperfor

7、manceiSanalyzedandpointstobeconsideredforoptimizationdesignarediscussed．Finally,strategiesforimprovingtheperformanceoftheheatsinkarepresented．Differentdimensionsandheatloadrequirementsareproposedfordifferentmierochannelheatsinkapplications．nleauthordesignsano

8、ptimizationalgorithmbasedonthecharacteristicsofflowandheattransferinamicroehannelheatsinkandwritesoptimizationdesignsoftwareincorporatingthealgorithm．Givenpumpingworkorthemaximaltemperatu