Browsing by Author "Beattie, DRH"

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    The science and engineering of HIFAR safety
    (Australian Nuclear Science and Technology Organisation, 1993-12-01) Connolly, JW; Clancy, BE; Beattie, DRH; Robinson, GS; Godfrey, RM; Harrington, BV
    Since the HIFAR Safety Document was first issued major improvements have occurred in the quality of data and in the methods of calculation which are available for deterministic analysis of the behaviour of the reactor in normal or in accident conditions. Many such analyses have been carried out but the results have been reported in a wide range of internal memoranda and in external reports. In this report the most significant of the improved methods are described and the results of some of those analyses are reviewed. Principal areas covered are reactor physics of the core and reflector the dynamics of the control systems thermal hydraulic aspects important to safety margins and the emergency core cooling system. Abnormal events discussed are inadvertent reactivity insertion sequences and the loss of coolant accident. Where possible consistent sets of data are provided for use in future analyses.
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    Two-phase pressure losses - flow regime effects and associated phenomena.
    (Australian Atomic Energy Commission, 1971-01-01) Beattie, DRH
    An extensive analysis shows that published two-phase friction data conform to a series of distinct trends. This suggests that the different characteristics are associated with different flow regimes. Flow regime boundaries are clearly indicated when the data are plotted according to the method described. Apparent discrepancies or data scatter are resolved by recognising that more than one flow regime may sometimes exist for a given set of flow conditions.