TY - CONF
T1 - DEVELOPMENT OF MPS METHOD FOR ANALYSING CONVECTION AND SOLIDIFICATION OF MULTI-COMPONENT CORIUM IN SEVERE ACCIDENT OF A LIGHT WATER REACTOR
AU - Fukuda, Takanari
AU - Yamaji, Akifumi
AU - Li, Xin
AU - Haquet, Jean François
AU - Boulin, Anne
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grant Number JP21J12226. The MPS code of the present study was developed based on MMPS-HDDM code that was kindly provided by G. Duan and A. Yamaji.
Publisher Copyright:
© PARTICLES 2021.
PY - 2021
Y1 - 2021
N2 - In this study, a numerical approach for analyzing the internal status of Molten Core-Concrete Interaction (MCCI) has been developed based on Moving Particle Semi-implicit (MPS) method. Among the key required models, such as accurate viscosity interaction model for solidifying particles and interface tension models of different liquid phases, preliminary attempts have been made with new models. Namely, a simple mixing model and gas hosting particle model has been implemented to simulate the experiment with affordable calculation cost. The analysis results for VULCANO VF-U1 experiment have shown the possible mechanisms responsible for the characteristic distribution of the solidified metallic corium, which seemed to be highly dependent on the density of surrounding oxidic corium.
AB - In this study, a numerical approach for analyzing the internal status of Molten Core-Concrete Interaction (MCCI) has been developed based on Moving Particle Semi-implicit (MPS) method. Among the key required models, such as accurate viscosity interaction model for solidifying particles and interface tension models of different liquid phases, preliminary attempts have been made with new models. Namely, a simple mixing model and gas hosting particle model has been implemented to simulate the experiment with affordable calculation cost. The analysis results for VULCANO VF-U1 experiment have shown the possible mechanisms responsible for the characteristic distribution of the solidified metallic corium, which seemed to be highly dependent on the density of surrounding oxidic corium.
KW - Molten Core-Concrete Interaction (MCCI)
KW - MPS
KW - Multi-Phase Convective Flow
KW - Severe Accident of a Nuclear Reactor
KW - Solidification
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M3 - Paper
AN - SCOPUS:85135684786
T2 - 7th International Conference on Particle-Based Methods: Fundamentals and Applications, PARTICLES 2021
Y2 - 4 October 2001 through 6 October 2001
ER -