摇摆运动引起的波动与自然循环密度波型脉动的叠加

Overlapped Flow of Flow Oscillation Caused by Rolling Motion and Density Wave Oscillation of Natural Circulation

针对海洋条件(即摇摆工况)下,核动力装置自然循环流动不稳定的特点进行了实验研究。结果表明,摇摆引起的流量波动的附加量与自然循环密度波型脉动的流量脉动相叠加,加剧了系统的不稳定,通过频谱分析,分析了叠加效应的强弱。

The characteristic of nuclear plant natural circulation flow instability under rolling motion condition was carried out experimentally. The results showed that the flow oscillation caused by rolling mo- tion and the density wave oscillation made the system oscillate with overlapped effect, which made the system more instable. Based on the frequency chart analysis, the effect of overlapped was analyzed.