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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

EXPERIMENTAL AND NUMERICAL STUDIES OF MIXED CONVECTION IN A CAVITY. CASE OF SODIUM AND WATER

Get access (open in a dialog) DOI: 10.1615/IHTC7.2960
pages 489-493

要約

The basic problem studied is the interaction between a vortex and a thermal stratification. This phenomenon takes place in a rectangular cavity. On its lower side, the cavity communicates with a channel in which a forced flow is imposed.
This problem is studied with three different approaches : two experiments (one in sodium, the other in water) and a computer code.
In the sodium experiment, the dimension of the cavity ensures large values of the Peclet number (about 104) and a wide range of values of the Richardson number (from O.l to 3). With this experiment, all the regimes of mixed convection, from forced convection to complete stratification, can be covered.
These results are compared to those of the two other approaches :
- The water experiment, related to the sodium prototype through an approximated similitude
- The numerical calculation with a two dimensional code using finite differences in which a two equation turbulent model is implemented.
This comparison between sodium, water and numerical results proves very interesting for studies of the thermohydraulic behavior of Liquid Metal Fast Breeder Reactors.