密集焊接作业电焊烟尘扩散特性与控制数值模拟

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1、Abstractconcentrationofthebottomoftheworkshoptobemorethantheconcentrationatthetopoftheworkshop.Merrycanreducetheconcentrationofelectricdustintheworkshop,neartheinletsideofthedustconcentrationislower,awayfromtheinletsideofthedustconcentrationishigher.Thetheweldingfumeco

2、ncentrationdecreasedmoreintheZ=1mtoZ=2.2mcrosssectionwiththewindspeedchanges,themoretheconcentrationdecreasedthenearthecrosssectionofthedustsource,thelesstheconcentrationdecreasedthenawaythecrosssectionofthedustsource.Theexhaustdeviceisclosertothedustsource,thetimeofwe

3、ldingdustremovaldeviceisshortandtheoperationspeedoftheweldingfumeishigher.Theidealpositionoftheexhaustdeviceisabout30cmfromthesideofdustsource.Thisstudyprovidesomevaluereferenceforreasonabledistributionweldingoperationspointsandmerryorganizationsintheweldingworkshop.Al

4、soprovideareferenceforputforwardreasonablemeasurestoreducetheconcentrationofweldingfumes.KeyWords：denseweldingoperations；weldingfume；diffusionregularity；influencefactors；numericalsimulationIII万方数据江西理工大学硕士学位论文目录目录摘要.......................................................

5、..........................................................................IAbstract...........................................................................................................................II第一章绪论........................................................

6、.............................................................11.1研究背景及意义.................................................................................................11.2电焊烟尘的研究概况.......................................................................................

7、..31.2.1电焊烟尘形成机理方面的研究.............................................................31.2.2电焊烟尘扩散模型及扩散过程的研究..................................................41.2.3电焊烟尘扩散及其分布的实验与模拟的研究.....................................51.2.4电焊烟尘的发尘量的影响因素的研究...............................

8、..................61.2.5电焊烟尘治理的研究.............................................................................71.3研究内