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1、HeatTransferCharacteristicsofSmall-SizedPlate-FinHeatSinkArrayinSupercomputerGaoweiXu1,JianshunXue2,YingjunCheng1,WenjieZhu2,LeLuo1ShanghaiInstituteofMicrosystemandInformationTechnology,ChineseAcademyofSciences,Shanghai200050,China2JiangnanInstituteofComputingTechnology,Wuxi214083,ChinaEmail:
2、xugwWmail.sim.ac.cnAbstractsmalloutline(e.g.28x28x30mm3),smallfin-pitch(minimum0.2mm)&fin-thickness(minimumTheheattransfercharacteristicsof128plate-finheatsinks0.1mm),furthermore,thereare128ofthiskindofinasupercomputerchassisaresimulatedbyCFDmethod.small-sizedheatsinksplacedinarrayinoneThefin
3、-pitchandfin-thicknessoftheheatsinkareoptimizedsupercomputerchassis.Regardingthelumpedheattransferandacrucible-shapedprofileofthemaximumtemperatureofcharacteristicsoftheheat-sinkarrayinsupercomputertheASICchipsvs.fin-pitchandfin-thicknessisderived.Achassisundertheforcedair-coolingcondition,th
4、ereisnothermalresistancemodelwassetuptoexploretheprofileandotherreportuptonow.Soitisnecessarytoperformfurtheritdemonstratedthattheprofileisarisefromthejointactionofinvestigationsoastoimprovetheheattransferperformancethethermalconductionandconvectioninasmall-sizedheatforsuchaheatsinkandensuret
5、hethermalreliabilityofthesink,andthatthisphenomenoncanbeattributedtothefactsupercomputersystem.thatthedependenciesofthermalresistancesoneitherfinpitchInthisstudytheComputationalFluidDynamic(CFD)orthicknessisnon-monotonic.Thecriterionregardingthefin-pitchandfin-thicknessoptimizationaswellasthe
6、BiotmethodisemployedtosimulatetheheattransferbehaviorsNumberisdeveloped.Biotcriterionisapplicabletoestimateoftheplate-finheat-sinkarrays.Inaddition,sometheBiotNumberofheatsinkandactastheapplicationimportantheat-sinkparametersareoptimized,andsomecriterionofheatsink,butnotapplicableforsmall-siz
7、edheatothertypicalissues,e.g.Biotcriterion,arealsodiscussed.sinkinwhichconvectivecoefficientisafunctionoffin-pitch.II.ProblemDescriptionTheempiricalformulaofheattransferanddesignruleofsuchThesupercomputerchassisisshowninFig.landFig.2.aheatsin
