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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

ON THE CRITICAL FLOWS OF SUBCOOLED LIQUIDS

Get access (open in a dialog) DOI: 10.1615/IHTC7.4700
pages 379-383

Abstrakt

With reference to loss of coolant accidents in LWR's the critical flows of subcooled liquids and the emerging jets' characteristics have been investigated. Preliminary attention has been paid to the time extension of metastability state.
"Ad hoc" tests have outlined an upper limit of this time ranging about to 10−4 s. Further observations have shown that the shape of the emerging jet cone is narrower in correspondence to higher inlet subcoolings. Radial pressure profiles within the jet have been obtained, revealing the existence of a thin, internal liquid core gradually evaporating at the surface. This mechanism seems prevailing in comparison of a sudden bulk flashing.