铸造充型过程三维流场数值模拟技术研究
本文关键词:铸造充型过程三维流场数值模拟技术研究,由笔耕文化传播整理发布。
学位论文
武汉理工人学硕士学位论文
Abstract
Ourcountryhasabigfoundryindustry,butthere
canaremanydefectsinthecastingsduetothelOWtechnologicallevel.SOitnotberegardedasapowerful
country.Withthedevelopmentinthetechnologyofcomputationalfluiddynamics.
athenumericalsimulationofcastinghasgrownmuchmature,andbecome
becauseithasimportantscientific
catchupwiththe
Onthebaseofsummarizing
thePaperestablishedareliablewayofscientificanalysis.TheresearchshouldbeactivelycarriedoutinChina,andintemationaladvancedapracticalvalueforthefoundryindustrytolevel.varietyofmethodswhichsimulatetheflowfield,mathematicalmodelformoldfillingprocessaccordingtogoverningequationofMomentumandcontinuity,thenusingfinitedifferencemethodtodiscretethemodelinspaceandtimedomain,whileapplicating“straggergridmethod”tosolvetheproblemsofunreasonableiterationresults.suchas‘'waveform’’or“board.shaped”velocityandpressurefield.casedbyordinarydiscretemethod.Intheprocessofnumericalsimulation.establishedtheflowcharttosolvetheflowfieldaccordingtoSOLAalgorithm,and
onderivedasimpleandeffectivemethodtotreatthefreesurfacebased
thechangesofflowandgetaVOFmethod,whichCancalculatenewsolutionbasin.Repeatedtheprocessaboveto
ensurecompletetheentireriverbasinflowfieldsolution.Inorderto
processthecalculationcardedoutsuccessfully,theboundary
usesconditionsofvelocityandpressurealSOhasbeenreasonableset.Inprogramdesigning,thepaperobject orientedprogramming
amethod,independentlydevelopedamodulewhichpossessesflowfieldcomputingfunctionsandintegrateditselfintothemainprogr锄throughunifiedconnectorwhich
integratedthefunctionsof3Ddisplaying,meshgeneration,,numericalsimulationanddynamicsimulation.Thesoftwarehassimple,friendlyinterfaceandwell-stmcted,andthe
well.programhasgoodscalability,maintainabilityandreliabilityas
Finally,bycomparingthepicturesofBenchMarktestingblockexperiment、析tllthecomputersimulatingresults.itfoundthatthesimulationarebasicallyconsistentwiththeexperiment.theresultsreflecttheobjective1awoffluidflowandshowthatthemathematicalmodel,flowfieldcalculationmethodsand
approacharefundamentallyright.Thesoftware
deeperstudyinthefuture.boundaryconditionsCanbeappliedtothesimulationofsomesimplecasting.however,therearesomeinaccuracyindetailwhichneeds
Keywords:FillingProcessofCasting,SOLA-VOFAlgorithm,FreeSurface,
BoundaryCondition
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本文关键词:铸造充型过程三维流场数值模拟技术研究,由笔耕文化传播整理发布。
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