摘要
流型的精确识别对于改进两相压降的计算精度有重要意义。本文利用静止时实验数据对现有弹状流向搅拌流的转变准则进行了验证评价。在此基础上选择符合最好的转变准则,引入摇摆运动产生的瞬变外力场,构建了摇摆条件下弹状流搅拌流转变准则,利用摇摆条件下的实验数据进行了验证。对转变准则进行分析,结果表明,在现有工况范围内,随摇摆振幅的增大,弹状流向搅拌流转变略有提前,而摇摆周期对流型转变的影响可忽略。
The accurate identification of flow pattern is of great significance to improve the calculation accuracy of two-phase pressure drop.In this paper,the existing transition criteria of slug flow to churn flow were verified and evaluated using the static experimental data.On this basis,the best transition criterion was selected and the transition criterion between slug flow and churn flow under rolling condition was constructed by introducing the transient external force field produced by rolling motion,which was verified by the experimental data.The transition criterion was analyzed.The results show that with the increase of rolling amplitude,the transition of slug flow to churn flow advances a little,while the influence of rolling period on transition boundary can be ignored.
作者
谢添舟
徐建军
卓文彬
陈炳德
XIE Tianzhou;XU Jianjun;ZHUO Wenbin;CHEN Bingde(CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology,Nuclear Power Institute of China,Chengdu 610213,China)
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2020年第9期1589-1594,共6页
Atomic Energy Science and Technology
关键词
摇摆运动
弹状流
搅拌流
流型转变边界
rolling motion
slug flow
churn flow
flow pattern transition boundary
