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A model for solid bubbles formation in melt–coolant interaction

✍ Scribed by Leonid A. Dombrovsky

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
260 KB
Volume
52
Category
Article
ISSN
0017-9310

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✦ Synopsis

A physical model of formation of thin-wall hollow solid particles in melt-coolant interaction is developed. Such bubble-like solid particles have been observed in the laboratory experiments with some oxide melts and water as a coolant. The considered range of the problem parameters corresponds to interaction of the core melt with water pool in hypothetical severe accident in some industrial nuclear reactors. The calculations showed that only very small corium droplets of diameter less than 1-2 mm can produce ''solid bubbles" and it depends on initial overheating of the melt. The results obtained are in qualitative agreement with recently reported laboratory observations.

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