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1、外文翻译THEORETICALINVESTIGATIONOFFLUIDDISTRIBUTORINTHEINLET/OUTLETREGIONOFSHELL-SIDEOFSHELL-AND-TUBEHEATEXCHANGERWITHLONGITUDINALFLOWZENGWen-Liang1，2,HUXian-ping1,DENGXian-h1(1.TheKeyLab.ofEnhancedHeatTransfer&EnergyConservationoftheMinistryofEducation,SouthChinaUniversityofTe
2、chnology,Guangzhou510640,China;2.TheChemistryandMaterialsDepartment,HengyangNormalUniversity,Hengyang 421001,China)Abstract:Presentsthetheoreticalinvestigationoffluiddistributorintheregionofinlet/outletofshell-sideofshell-and-tubeheatexchangerwithlongitudinalflowinthispaper
3、.Itisadvancedthestructuraloptimalmathematicalmodelamongthevariousstructuralparametersofshell-sideofheatexchanger.Themodelprovidesreferenceanddirectionnotonlyforexperimentalandnumericalinvestigationofthisproblem,butalsofortheotherprocesswithfluiddistribution.Keywords:shell-a
4、nd-tubeheatexchanger;longitudinalflow;fluiddistribution;structuraloptimization;theoreticalmodelCLCNumber:TQ051.5 DocumentCode:A0 IntroductionBecauseofsuchadvantagesaslowerpressuredropofshell-side,largerlogarithmicmeantemperaturedifference(LMTD),eliminatingvibrationofheat
5、-transfertubes,andbetteroverallheattransferperformance,shell-and-tubeheatexchangerswithaxialflowhavebecomemorepopularinvariousareasofindustrialprocesscomparingwithshell-and-tubeheatexchangerswithsegmentbaffles.Withthescaleofindustrialproductiondevicesbecomelagerandlarger,he
6、atexchangerasatypeofuniversalequipmentinindustrialprocessalsoneedtosatisfytherequirementofindustrialprocess,andtheheattransfercapabilityofheatexchangerbecamelargerandlarger.Becausethelengthoftubeofshell-and-tubeheatexchangerisdecidedbyprocessingtechnologycondition,itisneces
7、sarytoenlargethediameterofshell-sideinordertoenlargetheheattransfercapability.Withtheincreasingofdiameterofheatexchangeranddecreasingoftheratiooflengthanddiameter(L/D),shell-sidefluidflowmaldistributionbecamemorebadlyandpressuredropofshell-sideincreasedmorequickly,itisnoton
8、lyreducetheoverallheattransferperformanceofheatexchangerbutalsoinducevibrationofhe
