Numerical analysis for stratification with steam condensation using a CFD code

If nuclear fuel melts due to the loss of cooling, hydrogen is generated by chemical reaction of metallic clad with steam, resulting in the hydrogen risk of explosion. Therefore the stratification of hydrogen in the steam-air environment is important, which is influenced by the steam condensation. In...

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Bibliographic Details
Main Authors: Shin, Sang Yun, Hwang, Ji-Hwan, Jerng, Dong-Wook
Format: Conference Proceeding
Language:English
Subjects:
Aerodynamics
Chemical reactions
Clad metals
Computational fluid dynamics
Condensation
Hydrogen
Mathematical models
Melts
Nuclear fuels
Numerical analysis
Organic chemistry
Parameter identification
Physical properties
Stratification
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Summary:If nuclear fuel melts due to the loss of cooling, hydrogen is generated by chemical reaction of metallic clad with steam, resulting in the hydrogen risk of explosion. Therefore the stratification of hydrogen in the steam-air environment is important, which is influenced by the steam condensation. In this paper, we explored physical parameters which may affect the hydrogen stratification under steam condensation conditions through benchmarking process with a small-scale experiment using a Computational Fluid Dynamics (CFD) code, in order to identify relative influences of numerical model parameters on the stratification analysis.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5044110