激波与液滴、液柱与液幕相互作用的空气动力学现象的实验-研究

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1、浙江理工大学硕士学位论文激波与液滴、液柱及液幕相互作用的空气动力学现象的实验研究AbstractTheshock—inducedmovement，deformationandatomizationofliquiddropsareclassicalproblemsinfluiddynamicsofmultiphasesystems．Intensivestudyoftheseproblemsinmanyaspects，suchassupersonicspeedraindroperosion,inte

2、rnal-combustionengineandcombustionturbine，andthecombustionstabilityofliquidfuelindetonationengine，isofimportanttheoreticalandpracticalsignificance．Inthispaper,anexperimentalinvestigationwascarriedouttotheinteractionbetweenshockwaveandliquiddroplets，l

3、iquidcolumnsorliquidcurtainsinahorizontalshockwavetube．Inthispaper,theexperimentswerecarriedoutinalargehorizontalshocktube．Visualizationexperimentalsectiondesignedbyselfisinstalledinthetailoftheshocktube．Byusinghighpressurenitrogentobreakaluminiumfil

4、mswithdifferentthicknesses，wegotshockwaveswithdifferentintensities．Weusedaluminiumfilmswithtwokindsofthicknessesintheexperiments，andcorrespondingly，wegotshockwaveswithMachnumber1．Iand1．25．Usingtestfittingpartsdesignedbyself,wemadeidealliquiddroplets，

5、liquidcolumnsandliquidcurtains．Experimentsoninteractionsbetweenshockwavesanddifferentsizesofliquiddroplets，singleordoublerowliquidcolumn,orliquidcurtainswerecarriedout．TheoreticalanalyzingontheinteractionbetweenshockwavesandliquiddropletsWascomparedw

6、ithexperimentalresults．Combiningwithexperimentalconditions，wedidnumericalcalculationsabouttheflowintheshocktube．Aftertheoreticallyanalyzingtheexperimentsandanalyzingexperimentalresults，wegottheseconclusions：aftershockwaveinteractingwithliquiddroplets

7、orliquidcolumns，liquiddropletsorliquidcolumnswoulddoacceleratedmotion．ThebiggerMachnumberofshockwave，thebiggerbecomestheacceleration．Thebiggertheoriginalsizesofliquiddropletsorliquidcolumns，thesmallerbecomestheacceleration．Afterhittingbyashockwave，li

8、quiddropletswillexperiencetheprocessfromcompressivedeformationtosheddingandatomization．IntheentiredeformationⅡ浙江理工大学硕士学位论文激波与液滴、液柱及液幕相互作用的空气动力学现象的实验研究process，thelateraldiameterofliquiddropletswillincreasefirst，andthendecrease．Thelongitudinaldiameterw