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Non-Contact Thermophysical Property Measurements of High-Temperature Corium Through Aerodynamic Levitation

Author

Listed:
  • Yaopeng Gong

    (CNNC Key Laboratory for Severe Accident Research in Nuclear Power Safety, China Nuclear Power Engineering Co., Ltd., Beijing 100840, China)

  • Li Zhang

    (CNNC Key Laboratory for Severe Accident Research in Nuclear Power Safety, China Nuclear Power Engineering Co., Ltd., Beijing 100840, China)

  • Yidan Yuan

    (CNNC Key Laboratory for Severe Accident Research in Nuclear Power Safety, China Nuclear Power Engineering Co., Ltd., Beijing 100840, China)

  • Weimin Ma

    (Division of Nuclear Power Safety, KTH Royal Institute of Technology, 106 91 Stockholm, Sweden)

Abstract

The thermophysical properties of corium are critical for improving the predictive accuracy of severe accident analysis codes. However, due to the high melting temperature and high volatility of corium, thermophysical property measurements are extremely challenging, resulting in a significant lack of data. This study presents a non-contact measurement facility based on the aerodynamic levitation technique, enabling the measurement of the density, surface tension, and viscosity of corium components at temperatures exceeding 3000 K. Density is measured based on the axisymmetric ellipsoid assumption of levitated drops, while the surface tension and viscosity are determined using the drop oscillation method. Experimental results for key corium components, including ZrO 2 and a UO 2 -ZrO 2 mixture, are presented, addressing data gaps in the thermophysical properties of UO 2 -containing materials.

Suggested Citation

  • Yaopeng Gong & Li Zhang & Yidan Yuan & Weimin Ma, 2025. "Non-Contact Thermophysical Property Measurements of High-Temperature Corium Through Aerodynamic Levitation," Energies, MDPI, vol. 18(1), pages 1-17, January.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:1:p:136-:d:1558298
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