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 contribution | Development and Validation of High-Precision Containment Spray Removal Radioactive Aerosol Model |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 146-156 |
| Number of pages | 11 |
| Journal | Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University |
| Volume | 57 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2023 |
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