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ISSN 打印: 1064-2285
ISSN 在线: 2162-6561

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DOI: 10.1615/HeatTransRes.v30.i7-8.120
pages 515-521

Water Boiling on Corium Melt Surface

S. V. Beshta
The Research Institute of Technology, Sosnovy Bor, Leningrad Region, Russia
V. S. Granovski
The Research Institute of Technology, Sosnovy Bor, Leningrad Region, Russia
A. A. Sulatski
Alexandrov Rtsearch Institute of Technology (NITI), 188540 Sosnovy Bor, Leningrad region, Russia

ABSTRACT

An experimental investigation was carried out to study heat transfer for water film boiling from a melted corium surface at the temperature ∼1700°C. The heat flux magnitude was 0.82 MW/m2, that is nearly 40% more than the corresponding one a solid surface. This discrepancy may result from the instability of the melt-steam interface leading to the increase of interface area due to the penetration of melt particles into the water layer and water drops-into the melt layer. These phenomena were observed in the experiments. The development of a Kelvin-Helmholtz instability was confirmed by analysis of the process parameters.


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