Title of article :
Astudyontheshellwallthinningcausesidentifiedthroughexperiment,numericalanalysisandultrasonictestofhigh-pressurefeedwaterheaterOriginalResearchArticle
Author/Authors :
KyeongMoHwang، نويسنده , , LeeWoo، نويسنده , , TaeEunJin، نويسنده , , KyungHoonKim، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
Feedwaterheatersofmanynuclearpowerplantshaverecentlyexperiencedseverewallthinningdamage,whichacceleratesastheoperationprogresses.SeveralnuclearpowerplantsinKoreahaveundergonethisdamagearoundtheimpingementbaffle–installeddownstreamofthehigh-pressureturbineextractionsteamline–insidenumbers5Aand5Bfeedwaterheaters.Atthatpoint,theextractedsteamfromthehigh-pressureturbineconsistsintheformoftwo-phasefluidathightemperature,highpressureandhighvelocity.Sinceitflowsinreversedirectionafterimpingingtheimpingementbaffle,theshellwallofnumber5high-pressurefeedwaterheatermaybeaffectedbyflow-acceleratedcorrosion.ThispaperdescribesthecomparisonsbetweenthenumericalanalysisresultsusingtheFLUENTcodeandthedownscaledexperimentaldatainanefforttodeterminerootcausesoftheshellwallthinningofthehigh-pressurefeedwaterheaters.Thenumericalanalysisandexperimentaldatawerealsoconfirmedbytheactualwallthicknessmeasuredbyultrasonictests.Fromthecomparisonoftheresultsforthelocalvelocityprofilesandthewallthinningmeasurements,thelocalvelocitycomponentonlyinthey-directionflowingverticallytotheshellwall,andnotinthex-andz-directions,wasanalogoustothewallthinningdata.
Journal title :
Nuclear Engineering and Design Eslah
Journal title :
Nuclear Engineering and Design Eslah
