微型直管道中二相流體流動(dòng)問(wèn)題的數(shù)值仿真研究.pdf

1、中國(guó)農(nóng)業(yè)大學(xué)碩士學(xué)位論文微型直管道中二相流體流動(dòng)問(wèn)題的數(shù)值仿真研究姓名：于召亮申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：固體力學(xué)指導(dǎo)教師：秦太驗(yàn)20060601中國(guó)農(nóng)業(yè)大學(xué)碩士學(xué)位論文摘要AbstractThepointofdropletsindispersionandmixingflowisonephasepassingthroughdispersedmediumwiththeformationofmicrodropletflowsinotherpha

2、seformixandtransferTheproblemofthose，widelyusedinthefieldsoffood，chemicalproductionandbiologyetal，especiallyinMEMS，appliedinmicrofluidicchip，biochipandothermicrodevices，belongstotheproblemoftwophasefluidflowinmicrochanne

3、larepaidmoreandmoreattentionn“varietyoftwophaseflowbehaviorsisbothinterestingatafundamentallevelandrelevantforthoseapplicationsbasedontheaccuratetuningofdropletsizes：microdropletsCOuld，forexample，beusedtoconfinechemicalr

4、eactions，ortodeliversubstancesinwelldefinedamountsSuchaconnolisgenerallyattainableforalimitedrangeofflowconditionsandwithfluidshayingpropertiesthatasecompatiblewiththesurfacesofthedeviCensedTheformerstudiedaxisymmeadccre

5、epingmotionofdropsthroughcircularcapillarytubesBasedonthoseresearch，usingphasefieldmodelandfiniredifferencemethod，Wesimulatedthemotionenddeformationofdropletinmicrochannel，andthenWeanalyzedthefactorofchangingtherateofdef

6、ormation，therelationbetweenvelocitydifferentialpressureandtheprocessofflows，theactionofsomeimportentdimensionlessparametersWecartcatchthegeneralcontentsasfollows：1Appliedwithphasefieldmodelandphasefieldtheorydiscussthemi

7、xturemodeloftwophaseflowbyaseriesofdeducesFurtherinore，weexplainthedefinitionofcontactangle，andtheactorwhichplaysintheprocessofsurfacewetting；andthen，basedOilLangevinequationandFluctuationdissipationtheoremwhichdepictBro

8、wnian，WegivethetransportequationofmultiphaseflowFinallywegetthetransportequationoftwophaseflowmaketheequationsdimensionless，andresearchtheeffectofsomedimensionlessparameters2，Usingfinitedifferencemethod，wediscretethedime

9、nsionlessequationoftwophaseflowsystem，anddiscussthestaggeredmethodAtlast，WegetthepressureandvelocityformationofNavierStokesequationwithSIMPLEandPISOpressurecorrectionmethod，anddiscusstheprinciplesofmakefileintheenvironme

10、ntofLinuxoperatingsystem3Withtheresultofsimulation，Wegetsomeitemsofcontrollingsingledropletofdispersedphaseanddimensionlessparameterrsnch∞PecletnumberandCapillarynumbereta1)Discussedtherateofvelocitywhichistheratebetween

11、thedispersedphaseandthebulkphase，WegivethepicturecomparingwithMartinez’SresultFinallyWegivetherelationbetweenthedifferentialpressureandotherphysicalparametersWehaveasimilarconclusionwithformers’resultKeywords：twophaseflo