资源描述：
《Aerodynamic evaluation of an internal epoxy coating》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、ProgressinOrganicCoatings54(2005)7377ShortcommunicationAerodynamicevaluationofaninternalepoxycoatinginnaturegaspipelineXiao-HongYanga,∗,Wei-LingZhua,ZhuLinb,Jian-JunHuocaBiotechnology&ChemicalEngineeringDepartmentofWuhanPolytechnicUniversity,Hankou,Wuhan,PRChinabResearchInstitut
2、eofEngineeringTechnologyofCNPC,Tianjin,PRChinacNationalTurbulenceLaboratoryofBeijingUniversity,Beijing,PRChinaReceived9August2004;accepted29April2005AbstractAnaerodynamicevaluationmethodforinternalepoxycoatinginnaturalgaspipelinewaspresentedbyintroducingthefrictionfactorofflowing
3、gas.NumericallycalculatedvaluesofthisfactorfromtheColebrook-Whiteequationwerecomparedwithmodelexperimentalandfieldcomparativelytesteddata.Theyshowgoodagreementbetweenthenumericalandexperimentalresults.Therefore,itprovesthattheColebrook-Whiteequationisavailableforevaluationoftheep
4、oxycoatinginnaturalgaspipeline.Withthismethod,thefrictionfactorsshowanotablerelativedecreaserateupto25%atReynoldsnumberof4.32×107forapipediameterof1016mmduetotheapplicationoftheinternalepoxycoating.©2005ElsevierB.V.Allrightsreserved.Keywords:Epoxycoating;Frictionfactor;Aerodynam
5、icevaluation;Gaspipeline1.IntroductionReferringtomaterial,mostgaspipelineengineerprefersepoxycoatingforitsexcellentadherence[79].Asaresult,Inoilandgasindustry,thereisalwaysastrongtrendtotheepoxycoatinghasbeenappliedastheflowefficiencyreducethecostsofgastransmissionpipeline.Uptonow
6、,internalcoatingtoalargenumberofnaturalgastransmis-numerousstudieshavebeencarriedoutforthisgoalandsomesionprojects[10].Withincreasinguseofthisinternalepoxyeffectivemethodshavebeeninvented.Theuseofinternalcoating,itismoreandmoreimportanttoknowtheinflu-coatingthatappliesacoatingfilm
7、ontheinnersurfaceofenceofpropertiesofcoatingfilmonflowinggasstate,whichthepipe[13]isoneofthemostsuccessfulexamples.Bybelongstoaerodynamiccategory.Problemsrelatingthiscat-thismethod,theinnerroughnesscanbeobviouslymodifiedegory,suchastowhatextenttheinternalepoxycoatingcanasaresultoft
8、hemuchsmoothercoatedsurface[4,5].Thisreducethef
