Title of article
EffectoftheyawinjectionangleontheECCbypassincomparisonwiththehorizontalDVIOriginalResearchArticle
Author/Authors
T.SKwon، نويسنده , , Sow-Hsong Kuo، نويسنده , , B.JYun، نويسنده , , H.KCho، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
10
From page
295
To page
304
Abstract
Thecomparisontestsforthedirectemergencycorecooling(ECC)bypassfractionwereexperimentallyperformedwithatypicaldirectvesselinjection(DVI)nozzleandanECCcolumnnozzlehavingayawinjectionangletothegravityaxis.TheECCyawinjectionnozzleisnewlyintroducedtomakeanECCwatercolumninthedowncomerregion.TheyawinjectionangleoftheECCwaterrelativetothegravityaxisisvariedfrom0to(±)90°steppedby45°.Thetestsareperformedintheair–waterseparateeffecttestfacility(directinjectionvisualizationandanalysis(DIVA)),whichisa1/7.07linearlyscaled-downmodeloftheAPR1400nuclearreactor.Thetestresultsshowthat(1)iftheECCwatercolumnisinjectedintothewakeregionwhichisinducedbythehotlegbluntbodyinthedowncomerannulus,theECCbypassfractionisgreatlyreducedcomparedwiththetypicalhorizontalECCinjectionwhichmakesECCfilmonthedowncomerwall.Atthesametime,theECCpenetrationtowardthelowerdowncomerregionbecomeslargerthanthoseofatypicalhorizontaltypeofdirectvesselinjectiononthedowncomerwallvertically.(2)IftheECCwatercolumnisinjectednearthebrokencoldleg,theECCwaterisdirectlybypassed.Thus,theECCpenetrationfractionisgreatlyreducedcomparedwithatypicalfilmtypeofthehorizontalECCinjection.(3)InordertominimizetheECCbypassfraction,theECCwatershouldbeinjectedtowardthewakeregionofthehotlegbluntbodies.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2003
Journal title
Nuclear Engineering and Design Eslah
Record number
894612
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