Oxidation during fuel-coolant interaction Advances and modeling
| Autor: | Olivia Coindreau, M. Hadj-Achour, Stephane Picchi, V. Loisel, J. A. Zambaux, Renaud Meignen |
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| Přispěvatelé: | AREVA, Groupe AREVA, PSN-RES, Institut de Radioprotection et de Sûreté Nucléaire (IRSN), Agence Nationale de la Recherche, ANRArevaÃlectricité de France, EDF |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Hydrogen 020209 energy chemistry.chemical_element 02 engineering and technology 7. Clean energy 01 natural sciences 010305 fluids & plasmas Thermal hydraulics Reaction rate 0103 physical sciences 0202 electrical engineering electronic engineering information engineering [CHIM]Chemical Sciences General Materials Science Safety Risk Reliability and Quality Waste Management and Disposal Mechanical Engineering Superheated steam Drop (liquid) Mechanics Coolant Subcooling Boundary layer Nuclear Energy and Engineering chemistry 13. Climate action |
| Zdroj: | Nuclear Engineering and Design Nuclear Engineering and Design, Elsevier, 2019, 346, pp.200-208. ⟨10.1016/j.nucengdes.2019.02.008⟩ |
| ISSN: | 0029-5493 |
| Popis: | International audience; Following the OECD SERENA phase 2 program and EC SARNET-2 network conclusions, oxidation was identified as a major issue for a comprehensive modelling of Fuel Coolant Interaction (FCI). Indeed, the topic is very complex, involving hydrogen and void generation, strong heat release and change of material properties, in particular regarding solidification. Based on a literature review and recent experimental data, the mechanisms related to oxidation are revisited. Following this work, a kinetic model of oxidation is being built and applied to the thermohydraulic code MC3D, based on the competition between H 2 /vapor inter-diffusion in the boundary layer and oxygen diffusion in the melt. Two drop configurations are considered here, in subcooled water and in superheated steam. Faced with the paucity of experimental data in terms of kinetics of reaction above the metal melting point, direct numerical simulations are performed in order to compare the reaction rates with those given by the macroscopic model and to provide a local scale observation of the boundary layer surrounding the drop during the process of oxidation. © 2019 Elsevier B.V. |
| Databáze: | OpenAIRE |
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