Indirect measurement of the solid/liquid interface using the minimization technique

Conference · Fri Nov 01 00:00:00 EST 1985 · Trans. Am. Nucl. Soc.; (United States)

OSTI ID:5464952

Choi, H; Chun, M

The phenomenon of solidification of a flowing fluid in a vertical tube is closely related to the relocation dynamics of molten nuclear fuels in hypothetical core-disruptive accidents of a liquid-metal fast breeder reactor. The knowledge of the transient shape and the position of the liquid/solid interface is of practical importance in analysis of phase change processes. Sparrow and Broadbent directly measured the solid liquid interface via experiments, whereas Viskanta observed the solid/liquid interface motion via a photographic method. In this paper, a new method to predict the transient position of the solid/liquid interface is developed. This method is based on the minimization technique. To use this method one needs the temperature of the wall on which the phase change is to take place. The new technique is useful, in particular, for the case of inward solidification of a flowing fluid in a tube where direct measurement of the solid/liquid interface is not possible, whereas the tube wall temperature measurement is relatively easy.

• OSTI ID: 5464952
• Report Number(s): CONF-851115-; TRN: 86-024129
• Journal Information: Trans. Am. Nucl. Soc.; (United States), Vol. 50; Conference: American Nuclear Society winter meeting, San Francisco, CA, USA, 10 Nov 1985
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
LMFBR TYPE REACTORS
REACTOR CORE DISRUPTION
FLUID FLOW
HEAT TRANSFER
PHASE TRANSFORMATIONS
LIQUID METALS
MELTDOWN
REACTOR ACCIDENTS
ACCIDENTS
BREEDER REACTORS
ELEMENTS
ENERGY TRANSFER
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FLUIDS
LIQUID METAL COOLED REACTORS
LIQUIDS
METALS
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220900* - Nuclear Reactor Technology- Reactor Safety
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Breeding