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1、中国石油大学（华东）本科毕业设计（论文）外文翻译中国石油大学（华东）本科毕业设计（论文）外文翻译学生姓名：王亮学号：04051618专业班级：自动化04-6班指导教师：华陈权2008年6月20日18中国石油大学（华东）本科毕业设计（论文）外文翻译英文资料Multi-phaseFlowAnalysisinOilandGasEngineeringSystemsanditsModellingTwo-phaseflowisverycommoninindustrialprocessesanditsapplicat
2、ionswerealreadyinuseinagesasremoteastheeraofArchimedes.Atthepresenttime,manyindustrialprocessesrelyonmulti-phasephenomenaforthetransportofenergyandmassorformaterialprocessing.Duringthelastcentury,thenuclear,chemicalandpetroleumindustriespropelledintenser
3、esearchactivityonthearea.Theireffortshavebeenaimedatthedemystificationofthemechanismstakingplaceduringthiscomplexflowsituation.Inthepetroleumindustry,two-phaseflowcanbefoundinavarietyofsituations.Thethreemorecommonworkingfluids(oil,naturalgasandwater)can
4、havefourdifferenttwo-phaseflowpermutations:gas–liquid,liquid–liquid,solid–liquidandsolid–gasflows.Asolidphasecanbeincorporatedtothefloweitherfromthereservoiritself(duetoeitherdrillingactivitiesorsandformationduringproduction)orfromtheformationofcomplexso
5、lidstructuresduetotheprevailingproductionconditions(e.g.hydratesinnaturalgasfloworwaxesandasphaltenesinoilflow).Oilandnaturalgastransportationtypicallydealswithagas–liquidsystemofflow.Duetothedeformablenatureoffluids,thesimultaneousflowofgasandliquidinap
6、iperepresentsaverycomplexprocess.Asaconsequenceoftheirdeformablenature,gasandliquidmayadoptawidevarietyofspatialconfigurations,usuallyreferredtoasflowpatterns.Multi-phaseflowphenomenacanbefoundinawiderangeoflengthscalesofinterest.Therefore,themostsuitabl
7、eapproachtostudymulti-phaseflowswilllargelydependonthelengthscaleofinterest.Typically,inthepetroleum18中国石油大学（华东）本科毕业设计（论文）外文翻译industry,attentionisgiventolarge-scalephenomenainmulti-phaseflows,asnodetailedflowbehaviourisneededforroutinedesignandoperation.
8、Forinstance,inpipelinenetworksweareinterestedonlyinthepressuredropandliquidhold-up.Otherthantheeffectofthelocalflowpatternvariables,detailedflowphenomenaarenotimportant.However,small-scalestudiesofmulti-phaseflowsareveryim
