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EFFECTS OF THE BUBBLE SIZE DISTRIBUTIONS ON THE DECONTAMINATION FACTORS DURING BUBBLE RISE IN THE POOL SCRUBBING

  • Yoonhee Lee*
  • , Yong Jin Cho
  • , Inchul Ryu
  • *Corresponding author for this work
  • Korea Institute of Nuclear Safety
  • Korea Electric Power

Research output: Contribution to conferenceConference paperpeer-review

Abstract

In this paper, with the size distribution of the bubbles during pool scrubbing obtained from EPRI experiments, we propose a calculational method for bubble-size-dependent decontamination factors for more realistic analyses on the pool scrubbing coupling with bubble hydrodynamics and thermodynamics. We implement the calculational method into an in-house code named I-COSTA (In-Containment Source Term Analysis). We then perform sensitivity analyses of the bubble size on the various retention mechanisms of the aerosol particles in pool scrubbing. We also perform sensitivity analyses on the size distributions of the bubbles obtained from experiments with various conditions on the diameters at the nozzle exit, molecular weights of non-condensable gases in the carrier gases, and steam fractions of the carrier gases. We apply I-COSTA to analyses of LACE-ESPAÑA experiments and compare the numerical results to those from SPARC-90 and experimental results in order to validate the calculational method and show the effect of the bubble size distributions.

Original languageEnglish
Title of host publicationATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics
PublisherAmerican Nuclear Society
Pages1060-1073
Number of pages14
ISBN (Electronic)9780894487774
StatePublished - 2020
Event2020 International Topical Meeting on Advances in Thermal Hydraulics, ATH 2020 - Virtual, Online
Duration: 2020.10.202020.10.23

Publication series

NameATH 2020 - International Topical Meeting on Advances in Thermal Hydraulics

Conference

Conference2020 International Topical Meeting on Advances in Thermal Hydraulics, ATH 2020
CityVirtual, Online
Period20.10.2020.10.23

Keywords

  • Bubble Size Distribution
  • I-COSTA
  • LACE-ESPANA
  • Pool Scrubbing
  • SPARC-90

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