摘要
本文针对套管式直流蒸汽发生器传热管环隙窄缝通道的流动,采用RELAP5程序对强迫循环并联通道的流动不稳定现象进行研究,指出在进口欠热度较低的条件下,并联通道系统会发生两种完全不同的不稳定现象,即同相密度波不稳定性和管间脉动不稳定性。对密度波不稳定性的发生条件进行研究,在较大的参数范围内确定了各系统参数的影响规律,最终得出流动不稳定边界。并对不同流量条件和不同压力条件下的不稳定性区间进行了比较。
The study on the two-phase flow instability of forced circulation parallel multi-channel systems was presented using the RELAP5 code.The results show that,at the low inlet sub-cooling number conditions,there are two different instabilities in parallel channel systems,the in-phase density wave instability and the two-phase flow instability between multi-channels.The effects of main operating parameters on the density wave instability were studied.And the stability boundary of the density wave instability was confirmed.Finally,the unstable regions of the density wave instability were determined.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2012年第9期1074-1079,共6页
Atomic Energy Science and Technology
基金
中央高校基本科研业务费资助项目(HEUCFZ1023)
