高速线材控制冷却设备阻力和传热特性分析

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1、重庆大学硕士学位论文II英文摘要ABSTRACTChinahasbecomethecountrywhichhasthemostnumberoftherollinglineofhighspeedwirerod,thelargestproductionandthehighestdemandforwirerodintheworlduptonow.However,mostofthehighspeedwirerodrollingtechnologyinChinaareintroducedfromabroad.Soindependentdevelopmen

2、tofhighspeedwirerodrollingproductiontechnologyisverynecessary.Thecoolingcontroltechnologyofhighspeedwirerod,thekeytechnologyaffectingtheorganizationperformanceofwireproducts,istheimportantdevelopmentdirectionofhighspeedwirerodrollingtechnologyinthefuture.Sincewaterflowresist

3、anceandheattransfercharacteristicsofnozzleisthekeyfactortocontrolthecoolingcapacityofthewholecoolingsystem,thestudyonwaterflowresistanceandheattransfercharacteristicsofspraynozzlehasasignificanteffectonthetheindependentdesignanddevelopmentofhighspeedwirerodrollingtechnology.

4、CurrentlytheStelmorcoolinglineismostwidelyusedintheworld,whosecriticalcomponentsofthewatercoolingsectioniswater-coolednozzle.Therefore,thisthesisfocustheresearchonthenozzleinnerresistanceandheattransfercharacteristicsofwater-coolednozzle.Throughthepreliminaryanalysis,notonly

5、therateofflowofcoolingwateraffectswaterresistanceandheattransfercharacteristicsbutalsothediameterofthewireandspeedofwirerodthroughthewater-coolednozzlehaveaneffectonthem.Inthepresentstudy,theeffectsofvariousfactorsontheresistanceandheattransferpropertiesofthenozzlearefoundus

6、ingnumericalsimulation.Thephysicalmodeloftheflowareainthewater-coolednozzleatdifferentcasesisconstructedusingGAMBITsoftware.Then,numericalcomputingiscarriedoutusingFLUENTsolver.Abundantofdataofwaterresistanceandheattransferinthewater-coolednozzleatdifferentcasesisobtainedthr

7、oughaseriesofnumericalsimulation.Theeffectsoftherateofflow,thevelocityanddiameteroftherodonthewaterresistanceandheattransfercharacteristicsofthenozzlearerevealed.Basedonthesolutionresults,thewaterresistanceandheattransfercorrelationhavebeenproposedaccordingtothemultiplelinea

8、rregressiontechnique.Inordertorectifythedeviationbetweentheresultsofthenume