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Non-Contact Thermophysical Property Measurements of High-Temperature Corium Through Aerodynamic Levitation
China Nucl Power Engn Co Ltd, CNNC Key Lab Severe Accid Res Nucl Power Safety, Beijing 100840, Peoples R China..ORCID iD: 0009-0005-4733-3376
China Nucl Power Engn Co Ltd, CNNC Key Lab Severe Accid Res Nucl Power Safety, Beijing 100840, Peoples R China..
China Nucl Power Engn Co Ltd, CNNC Key Lab Severe Accid Res Nucl Power Safety, Beijing 100840, Peoples R China..
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Science and Engineering.ORCID iD: 0000-0002-8917-7720
2025 (English)In: Energies, E-ISSN 1996-1073, Vol. 18, no 1, article id 136Article in journal (Refereed) Published
Abstract [en]

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 ZrO2 and a UO2-ZrO2 mixture, are presented, addressing data gaps in the thermophysical properties of UO2-containing materials.

Place, publisher, year, edition, pages
MDPI AG , 2025. Vol. 18, no 1, article id 136
Keywords [en]
corium, thermophysical property, aerodynamic levitation, high temperature
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-359534DOI: 10.3390/en18010136ISI: 001393549300001Scopus ID: 2-s2.0-85214480240OAI: oai:DiVA.org:kth-359534DiVA, id: diva2:1935310
Note

QC 20250206

Available from: 2025-02-06 Created: 2025-02-06 Last updated: 2025-02-06Bibliographically approved

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Ma, Weimin

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