双丝共熔池GMAW焊接熔池流场和温度场的计算机模拟

28|TechniquesofAutomation&ApplicationsGMAWComputerSimulationoftheFluidFlowFieldandtheTempera-tureFieldofaTwin-wireCo-WeldingPoolXIESheng-mian1,ZHAOPeng-cheng2,HUANGShi-sheng2,WENYuan-mei2(1.ComputerandInformationEngineeringDep.,GuangzhouMaritimeCollege,Guangzhou510725,China;2.MechatronicEngineeringCollege,SouthChinaUniv.ofTech.,Guangzhou510641,China)Abstract:Theformingprocessoftheweldingpool,thefluidflowandthetemperaturefieldintheweldingpoolaresimulatedbyusingthequasi-steadystatenumericalmodelandtheweldingheatmodel.Thesimulationtheresultsarealsoverifieedvalidatedbyexperiments.Keywords:weldingpool;fluidflowfield;temperaturefield;computersimulationIndustryControlandApplicationsTechniquesofAutomation&Applications|29005.0/1≤-+NNNTTT005.0/1≤-+NNNUUU005.0/1≤-+NNNVVV005.0/1≤-+NNN)(11KTTNN≤-+001.0/1≤-+NNNUUU001.0/1≤-+NNNVVV001.0/1≤-+NNN×-×=--IIvHIdr=+0551917151801..30|TechniquesofAutomation&Applications()SIIVdIWdme=×-×-×+×⋅----8999710242981025198101525410101182324..././mrdd3=43prdm4mSd2rpn=pbItttItttI212211+++=a)b)(xA(a)b)(xAIndustryControlandApplicationsTechniquesofAutomation&Applications|31(a)xAxxAIndustryControlandApplications32|TechniquesofAutomation&ApplicationsIndustryControlandApplications38|TechniquesofAutomation&ApplicationsPatternRecognitionandSimulation(,)fxy(,)igxyv=minVmaxVminmaxiVvV,11,221111(,)(,)(,)[(,)][(,)]MNijmnMNMNijmnmnSmnTmnRijSmnTmn======×=∑∑∑∑∑∑,ijSijTMN(,)Rij(,)Rij(,)Rij