自然循环过冷沸腾流动不稳定性实验研究

Experimental Research on Subcooled Boiling Flow Instability of Natural Circulation

对自然循环过冷沸腾高频脉动进行了实验研究。实验结果表明,高频脉动为声波型脉动。通过实验分析,确定了声波型脉动发生的3种类型和声波型脉动发生的边界,并分析了影响其产生的因素。进一步分析证实汽泡脱离点与声波型脉动的产生和消失有直接关系,据此得出了声波型脉动发生的经验关系式。

Experimental research was conducted in the view of subcooled boiling high frequency oscillations. The results showed that the high frequency oscillations were acoustic oscillations. Through analysis, three types and the boundary of the acoustic oscillations were determined. The influences of system parameters on the onset of the acoustic oscillations were investigated. The analysis showed that the onset of FDB had direct relationship with the onset and disappearance of acoustic oscillations. Based on this, an empirical correlation of the onset of the acoustic oscillations was obtained.