Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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An experimental study on pool sloshing behavior with solid particles

  • Cheng, Songbai (Sino-French Institute of Nuclear Engineering & Technology, Sun Yat-Sen University) ;
  • Li, Shuo (Sino-French Institute of Nuclear Engineering & Technology, Sun Yat-Sen University) ;
  • Li, Kejia (Sino-French Institute of Nuclear Engineering & Technology, Sun Yat-Sen University) ;
  • Zhang, Ting (Sino-French Institute of Nuclear Engineering & Technology, Sun Yat-Sen University)
  • Received : 2018.06.01
  • Accepted : 2018.09.25
  • Published : 2019.02.25
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Abstract

It is important to clarify the mechanisms of molten-fuel-pool sloshing behavior that might be encountered during a core disruptive accident of sodium-cooled fast reactors. In this study, motivated by acquiring some evidence for understanding the characteristics of this behavior at more realistic conditions, a number of experiments are newly performed by injecting nitrogen gas into a water pool with the accumulation of solid particles. To achieve comprehensive understanding, various parameters including particle bed height, particle size, density, shape, gas pressure along with the gas-injection duration, were employed. It is found that due to the different interaction mechanisms between solid particles and the gas bubble injected, three kinds of regimes, termed respectively as the bubble-impulsion dominant regime, the transitional regime and the bed-inertia dominant regime, could be identified. The performed analyses also suggest that under present conditions, all our experimental parameters employed can have noticeable impact on the regime transition and resultant sloshing intensity (e.g. maximum elevation of water level at pool peripheries). Knowledge and fundamental data from this work will be used for the future verifications of fast reactor severe accident codes in China.

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References

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