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反应堆安全壳中高精度喷淋去除放射性气溶胶模型的开发及验证

Translated title of the contribution: Development and Validation of High-Precision Containment Spray Removal Radioactive Aerosol Model
  • Jishen Li
  • , Bin Zhang
  • , Jianqiang Shan
  • , Hao Yang
  • , Fan Miao
  • Xi'an Jiaotong University

Research output: Contribution to journalArticlepeer-review

Abstract

Thispaperimprovesthecontainmentsprayremovalmodelsinordertoaddressthelow accuracyoftheoriginalmodelsoftheISAA code.Basedonsingledropletcollectionparticle mechanism newinertialimpactionandinterceptionmodelswereusedtoaccuratelycalculatethe collectionefficiencyoflargeparticles.Additionally anewcorrelation wasusedtoexplainthe Browniandiffusioncollectionmechanismofsmallparticles.Moreover thermophoresisanddiffusiophoresismodelswereintroducedtoconsiderthecontributionofsteamcondensationinthecontainmenttothecollectionefficiency.Inaddition THAI TOSQANandCSEexperimentswere selectedtoevaluateandimprovethemodelprecision whilethecalculatedresultswerecompared withtheresultsofCOCOSYS ASTEC and MELCORcodes.FortheTHAIexperiment the maximumerrorsoftheimprovedISAAandCOCOSYSincalculatingthesprayremovalconstants are-28.6% and59.1% respectively.FortheTOSQANexperiment themaximumerrorsof theimprovedISAAandASTECincalculatingthesprayremovalconstantsare-12.3%and50. 9% respectively.FortheCSEexperiment the maximum errorsoftheimprovedISAA and MELCORincalculatingthesprayremovalconstantswere -12.3% and90.3% respectively. Thecalculationresultsshowthattheimprovedmodelcansimulatetheattenuationtrendofsuspendedaerosolswithhigheraccuraciesandsignificantlyimprovethecalculationaccuracyofthe sprayremovalconstants.Thisworkhelpstounderstandthescavenging mechanism ofaerosol particlebycontainmentspraydroplets andprovidesanalysis method withhighersimulation accuracy.Atthesametime itdiscoversshortcomingsinthesimulationofaerosolbehaviorinthe currentISAAcodeandpointoutthefutureimprovementdirectionsofthecode.

Translated title of the contributionDevelopment and Validation of High-Precision Containment Spray Removal Radioactive Aerosol Model
Original languageChinese (Traditional)
Pages (from-to)146-156
Number of pages11
JournalHsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
Volume57
Issue number12
DOIs
StatePublished - Dec 2023

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