中厚板层流模型中水冷换热系数参数回归及优化

51Vol15No11:2005207222.:(1979-),,,,E2mail:wbxang@eyou1com;(1942-),,,,.20063JournalofMaterialsandMetallurgyMarch2006,,,(,110004):,,.,,.:;;:TG335:A:167126620(2006)0120064204RegressandoptimizationofheattransferparametermodelinlaminarcoolingsystemWANGBing2xing,YUMing,WANGJun,WANGGuo2dong(TheStateKeyLaboratoryofRollingandAutomation,NortheasternUniversity,Shenyang110004,China)Abstract:HeatTransfermethodinhotrollingmediumplatecoolingsystemwasilluminated,thecoreinheat-transferprocess,heattransfer,wasanalyzedandregressed.Atthesametime,heattransferwasoptimizedthroughparameterregressandself-learn.Themethodscanmeetneedofworksite,andsatisfactorycontroleffecthasbeenattained.Keywords:laminarcooling;heattransfer;modeloptimize,.,..,.,.,.,,,.1,.,.:=kAkwkhkgQbe-ct(1),kAkwkhkg;a,b,c.tQ,te.2211,,,,.,,,tStfend(tStfend),,.tStfend,[1].1,,.,,,,,,,,..,,.1Fig11Arrangementofpipenozzlesandtrendofheattransfercoefficient212E=cmdt=cSh2dt(2)c;;S;h;dt.E=(t-tw)Sd(3)S;;t;tw;d.,,:E=E,:aQbexp(-ct)=chdt2(t-tw)d(4).dtd.,,.,tQ.,.,2m.,,t=(tin+tout)/2.,dt=tin-tout..chdt2(t-tw)d=,(4):lna+blnQ-ct=ln(5)Qt,,abc,=aQbe-ct(6)213,,,,,.,,,,,,.,.2.:=l/v;l;v.:Hcoef=HcoefG(7)Hcoef;G.Wei1Wei2,,.561:2Fig12Flowchartoftimeparameter3,,.,,,,.[2].,3mm1040mm11,Q34511kh..,,18,18kg.,,.3,3.11183=594,,,,,.3Fig13Controlparameterdiagram4,,..:,.:f3=fFCTmea-SCTmeaFCTcal-SCTcal(8)f3;f;FCTmea;SCTmea;FCTcal;SCTcal.10,.10.:fn+1=a[10]fn+a[9]fn-1++a[2]fn-8+a[1]fn-9(9),fnn;a[i]i[3].594,,.,[4].,.,:f1=gf1+(1-g)fs(0g1)(10),f1;fs;665g.(1),,.544,(A)Q235A(14mm,760),(B)S275JR(20mm,740),(C)HQ550(25mm,610),(D)Q235A(35mm,760).,,.,.4Fig14Temperaturecurvesofplateaftercooling6,,,,,,.:[1],,.[M].:,1995.83-90.[2],,,.[J].,2004,3(4):302-307.[3],,,.[J].(),2002,23(4):367-370.[4],,,.[J].,2005,12(3):228-230.761: