一体型舶用炉内装貫流型蒸気発生器の不安定流動に関する研究 : その2:不安定流動特性の解析

概要

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Density wave type flow instability in the steam generator of the Model Test Rig for an Integral Type Marine Reactor is analyzed and discussed. Previous researches of the density wave type flow instabilities conducted in foreign countries and in Japan are reviewed, and the status of the present research is made clear. From the discussions on the fundamental mechanism of density wave oscillation, it is said that the predominant pressure loss causing the oscillation in our experiments is dominated by the friction pressure loss at the superheated steam region. A simplified analytical model is proposed to obtain the stability thresholds for this particular case of oscillation, and the calculated values by the model are coincided very well with the experimental values. Moreover, a model for the oscillation frequencies is proposed applicable mainly to the density wave oscillations governed by the friction pressure loss at superheated steam region. The experimental data are well correlated with the model.
独立行政法人海上技術安全研究所の論文
1984-07-30