原子能科学技术2016，Vol.50Issue(5)：819-822,4.DOI:10.7538/yzk.2016.50.05.0819
蒸汽发生器U型管单相流动不稳定性分析
Single Phase Flow Instability Analysis in Steam Generator U-tube
摘要
Abstract
Under the natural circulation conditions ,it is shown that the single phase flow instability in parallel U-tubes of steam generator (SG ) can exist and the reverse flow occurs within some U-tubes ,which have negative effect on nuclear power plant passive safety .In this paper ,the dimensionless analysis was used to deduce the non-dimensional conservation equations and the flow instability criterion (critical Grashof number) was derived according to the linear instability analysis .The results show that for a certain U-tube , w hile the Grashof number is higher than the critical Grashof number ,the flow in the U-tube is instable ,and the reverse flow will occur .Aiming at a certain type of steam generator ,the flow instability in the U-tubes was analyzed and the flow instability criterion was verified by comparing with current existing methods .The effect of inlet density on the flow instability in U-tubes was studied .The result shows that the lower the inlet density is ,the easier the reverse flow happens .The conclusions can be used in the optimal design of the steam generator .关键词
蒸汽发生器/自然循环/流动不稳定性/倒流Key words
steam generator/natural circulation/flow instability/reverse flow分类
能源科技引用本文复制引用
王少明,郝建立,章德,储玺,胡高杰..蒸汽发生器U型管单相流动不稳定性分析[J].原子能科学技术,2016,50(5):819-822,4.基金项目
国家自然科学基金资助项目(11502298 ,11402300) （11502298 ,11402300）
中国核动力研究设计院核反应堆系统设计技术重点实验室基金资助项目(HDY-2015004) （HDY-2015004）
哈尔滨工程大学核安全与仿真技术国防重点学科实验室基金资助项目(2015A041) （2015A041）
