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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

EXPERIMENTAL INVESTIGATIONS AND NUMERICAL SIMULATIONS OF THREE-DIMENSIONAL TEMPERATURE AND VELOCITY FIELDS IN THE TRANSITION REGION FROM LAMINAR FORCED TO NATURAL CONVECTION

Get access (open in a dialog) DOI: 10.1615/IHTC10.3450
pages 585-590

Resumo

Thermal-hydraulic experiments were performed with water in order to simulate the decay heat removal by natural convection in a pool type sodium-cooled reactor. Two test rigs of different scales were used, namely RAMONA (1:20) and NEPTUN (1:5). RAMONA served to study the transition from nominal operation by forced convection to decay heat removal operation by natural convection. Steady-state similarity tests were carried out in both facilities. These data provide a broad basis for the verification of computer programs. Numerical analyses performed with the three-dimensional FLUTAN code indicated that the thermal hydraulic processes can be quantitatively simulated even for the very complex geometry of the NEPTUN test rig.