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鑄造充型過(guò)程三維流場(chǎng)數(shù)值模擬技術(shù)研究

發(fā)布時(shí)間:2016-08-04 14:00

  本文關(guān)鍵詞:鑄造充型過(guò)程三維流場(chǎng)數(shù)值模擬技術(shù)研究,由筆耕文化傳播整理發(fā)布。


學(xué)位論文

武漢理工人學(xué)碩士學(xué)位論文

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鋤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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  本文關(guān)鍵詞:鑄造充型過(guò)程三維流場(chǎng)數(shù)值模擬技術(shù)研究,由筆耕文化傳播整理發(fā)布。



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