Title of article
Analysisofthecapabilityofsystemcodestomodelcavitationwaterhammers:SimulationofUMSICHTwaterhammerexperimentswithTRACEandRELAP5OriginalResearchArticle
Author/Authors
WernerBarten، نويسنده , , AudriusJasiulevicius، نويسنده , , AnnalisaManera، نويسنده , , RafaelMacian-Juan، نويسنده , , OmarZerkak، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
17
From page
1129
To page
1145
Abstract
ThecapabilitiesofthenuclearsystemtransientcodesTRACEandRELAP5tomodelcoupledtwo-phaseflowandpressurewavepropagationsinapipeareassessedbyanalyzingtheUMSICHTPPPcavitationwaterhammerexperiments329and135aftervalveclosure.Time-dependentpressure,flowbehaviour,andthegenerationandcollapseofvaporbubblesatthevalveandthefirstbridgearediscussed.Weshowthatbothcodesareabletomodeltheflowbehaviourofthewaterhammerforthehighpressureandhightemperaturecase329(initially10–13barand420K),howevercondensationheattransferforthebasecaseneededtobeincreasedinordertoaccuratelymodelthemagnitudeofthefirstpressureexcursion.TheexperimentalbroadeninganddampingofthesubsequentpressurepeaksbyFluid-StructureInteraction(FSI)phenomenaarisingfromtheinteractionoftheflowwiththevibrationsofthepipingstructurearenotconsideredinthemodelingresults.Forthelowerpressureandtemperaturecase135(initially1–4barand294K),theTRACEcodeprovidesagoodapproximationofthepropagationofthepressurewaveandthevoidfractionbehaviour,alreadywithbasecaseconditions,whileRELAP5overpredictsthevaporgenerationalongthepipeand,asaresult,considerablyunderpredictsthepressureamplitudesandoverpredictsthewaterhammerfrequency.
Journal title
Nuclear Engineering and Design Eslah
Serial Year
2008
Journal title
Nuclear Engineering and Design Eslah
Record number
895069
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