摘要
对密度锁内小通道振荡现象进行实验研究,发现密度锁失效是由于某一小通道内的分层界面在振荡过程中超出栅格,从而在小通道间形成循环所致。通过理论分析,提出3种解决方法:改变通道管径、减小通道间压差和扰动均匀化,以此为依据设计密度锁结构并进行实验进行验证。结果表明:改变通道管径只有在振荡界面通过管径变化处时才起作用;减小通道间压差的方法则需增加密度锁长度;扰动均匀化是最佳方法,可有效地减弱振荡幅度。
Experiment study on small channels oscillation in density lock is carried out.The invalidation of density lock is due to the stratified interface of one small channel going beyond during the process of oscil-lation,and a circulation is formed among small channels.Three solutions are proposed through the theoretical analysis： variability of diameter channels,reduction of pressure among channels and disturbance of homog-enization.According to these solutions,the density lock structures are designed and verified through experi-ment.The result shows that the variability of diameter channels would effect only when oscillation passed;the way of reducing pressure among channels would increase the length of density lock and the disturbance of homogenization could reduce the oscillation effectively.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2010年第6期75-79,共5页
Nuclear Power Engineering
基金
国家自然科学基金资助项目(50776022)
关键词
密度锁
振荡
失效
结构
Density lock
Oscillation
Invalidation
Structure
