资源描述：
《2014. Large Eddy Simulation of Transient Flow, Solidification, and Particle Transport Processes in Continuous-Casting Mold》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、JOM,Vol.66,No.7,2014DOI:10.1007/s11837-014-1010-3Ó2014TheMinerals,Metals&MaterialsSocietyLargeEddySimulationofTransientFlow,Solidification,andParticleTransportProcessesinContinuous-CastingMold111,21ZHONGQIULIU,LINMINLI,BAOKUANLI,andMAOFAJIANG1.SchoolofMaterialsandMeta
2、llurgy,NortheasternUniversity,Shenyang110819,PeoplesRepublicofChina.2.e-mail:libk@smm.neu.edu.cnThecurrentstudydevelopedacoupledcomputationalmodeltosimulatethetransientfluidflow,solidification,andparticletransportprocessesinaslabcontinuous-castingmold.Transientflowofmolt
3、ensteelinthemoldiscalcu-latedusingthelargeeddysimulation.Anenthalpy-porosityapproachisusedfortheanalysisofsolidificationprocesses.Thetransportofbubbleandnon-metallicinclusioninsidetheliquidpooliscalculatedusingtheLagrangianapproachbasedonthetransientflowfield.Acriterion
4、ofparticleentrapmentinthesolidifiedshellisdevelopedusingtheuser-definedfunctionsofFLUENTsoftware(ANSYS,Inc.,Canonsburg,PA).Thepredictedresultsofthismodelarecomparedwiththemeasurementsoftheultrasonictestingoftherolledsteelplatesandthewatermodelexperiments.Thetransientas
5、ymmetricalflowpatterninsidetheliquidpoolexhibitsquitesatisfactoryagreementwiththecorrespondingmeasurements.Thepredictedcomplexinstantaneousvelocityfieldiscomposedofvarioussmallrecirculationzonesandmultiplevortices.Thetransportofparticlesinsidetheliquidpoolandtheentrapm
6、entofparticlesinthesolidifiedshellarenotsymmetric.TheMagnusforcecanreducetheentrapmentratioofparticlesinthesolidifiedshell,especiallyforsmallerparticles,buttheeffectisnotobvious.TheMarangoniforcecanplayanimportantroleincontrollingthemotionofparticles,whichincreasesthee
7、ntrapmentratioofparticlesinthesolidifiedshellobviously.NomenclaturehSensibleenthalpyaoOxygenconstanthmDistancebelowthemeniscusATemperaturecoefficientofsurfacetensionhrefReferenceenthalpyofpureironHTotalenthalpyAFSuperficialareaDHLatentheatAmuchMushyzoneconstantDH°Stan
8、dardheatofadsorptionCDSoluteconcentrationkThermalconductivityCDDragcoefficientkoConstantrelatedtotheentropyofoxygenCLLiftcoefficien
