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ISSN Online: 2377-424X

ISBN Print: 0-89116-130-9

International Heat Transfer Conference 6
August, 7-11, 1978, Toronto, Canada

A STUDY OF TRANSIENT, BUOYANCY-INDUCED FLOW STRATIFICATION RELEVANT TO THE PRIMARY POOL OF A LIQUID-METAL-COOLED FAST BREEDER REACTOR

Get access (open in a dialog) DOI: 10.1615/IHTC6.3600
pages 137-142

Resumo

The paper presents the results of a study of the transient motion of a vertical jet issuing into a cylindrical vessel following a sudden increase in the density of the jet. This vessel was an idealized, axisymmetric model of the reactor, where the sudden cooling of the primary sodium following a reactor trip was simulated by switching the flow from pure water to brine. The aim of the work was to investigate the criterion for buoyancy influence on the transient flow. Observation of the flow pattern was achieved either by flow visualization or, for more quantitative results, by introducing the brine at a different temperature from that of the pure water and monitoring the transient temperature field with an array of fast response thermocouples. On the basis of this work, it is concluded that the buoyancy influence can be described by an overall Richardson number and that typical reactor post-trip flows will be buoyancy influenced.